Slow Horses
Updated: 5/20/2026, 7:15:55 PM Wikipedia source
Slow Horses is a British spy thriller television series based on the Slough House novels by Mick Herron, created for television by the English comedian and writer Will Smith. It follows an MI5 unit where disgraced or failed agents are consigned, under the supervision of Jackson Lamb (Gary Oldman). It also stars Jack Lowden, Kristin Scott Thomas, Jonathan Pryce, Olivia Cooke, Saskia Reeves, Rosalind Eleazar, Christopher Chung and Aimee-Ffion Edwards. The series premiered on Apple TV+ on 1 April 2022 to highly positive reviews. The first five series have adapted the novels Slow Horses, Dead Lions, Real Tigers, Spook Street, and London Rules, respectively. Slow Horses has been renewed for a sixth and seventh season, based on the novels Joe Country and Slough House (series 6) and Bad Actors (series 7).
Infobox
Genre
Black comedy Drama Spy thriller
Created by
Will Smith
Based on
Slough House by Mick Herron
Written by
Will Smith Morwenna Banks Mark Denton Jonny Stockwood Sean Gray Edward Docx
Directed by
James Hawes Jeremy Lovering Saul Metzstein Adam Randall
Starring
Gary Oldman Jack Lowden Kristin Scott Thomas Jonathan Pryce Olivia Cooke Hugo Weaving Saskia Reeves Rosalind Eleazar Christopher Chung Aimee-Ffion Edwards
Theme music composer
Mick Jagger Daniel Pemberton
Composers
Daniel Pemberton Toydrum
Country of origin
United Kingdom
Original language
English
No. of series
5
No. of episodes
30
Executive producers
Iain Canning Hakan Kousetta Jamie Laurenson Gail Mutrux Emile Sherman Will Smith Douglas Urbanski Graham Yost
Producer
Jane Robertson
Cinematography
Danny Cohen
Editors
Katie Weiland Luke Dunkley
Running time
40–53 minutes
Production companies
See-Saw Films Flying Studio Pictures Sony Pictures Television Studios (series 1)
Network
Apple TV
Release
15 October 2025 (2025-10-15) – present
Tables
First released
First released
Series
First released
Episodes
Last released
1
1
Series
1
Episodes
6
Episodes
1 April 2022 (2022-04-01)
Originally released
29 April 2022 (2022-04-29)
Originally released
Slow Horses
Adapted novel(s)
James Hawes
2
2
Series
2
Episodes
6
Episodes
2 December 2022 (2022-12-02)
Originally released
30 December 2022 (2022-12-30)
Originally released
Dead Lions
Adapted novel(s)
Jeremy Lovering
3
3
Series
3
Episodes
6
Episodes
29 November 2023 (2023-11-29)
Originally released
27 December 2023 (2023-12-27)
Originally released
Real Tigers
Adapted novel(s)
Saul Metzstein
4
4
Series
4
Episodes
6
Episodes
4 September 2024 (2024-09-04)
Originally released
9 October 2024 (2024-10-09)
Originally released
Spook Street
Adapted novel(s)
Adam Randall
5
5
Series
5
Episodes
6
Episodes
24 September 2025 (2025-09-24)
Originally released
29 October 2025 (2025-10-29)
Originally released
London Rules
Adapted novel(s)
Saul Metzstein
| Series | Episodes | Originally released | Adapted novel(s) | Director | ||
| First released | Last released | |||||
| 1 | 6 | 1 April 2022 (2022-04-01) | 29 April 2022 (2022-04-29) | Slow Horses | James Hawes | |
| 2 | 6 | 2 December 2022 (2022-12-02) | 30 December 2022 (2022-12-30) | Dead Lions | Jeremy Lovering | |
| 3 | 6 | 29 November 2023 (2023-11-29) | 27 December 2023 (2023-12-27) | Real Tigers | Saul Metzstein | |
| 4 | 6 | 4 September 2024 (2024-09-04) | 9 October 2024 (2024-10-09) | Spook Street | Adam Randall | |
| 5 | 6 | 24 September 2025 (2025-09-24) | 29 October 2025 (2025-10-29) | London Rules | Saul Metzstein | |
· Episodes › Series 1 (2022)
1
1
No.
overall
1
No. in
series
1
Title
"Failure's Contagious"
Directed by
James Hawes
Written by
Will Smith
Original release date
1 April 2022 (2022-04-01)
After being scapegoated for a colleague's mistake during a training exercise at Stansted Airport, MI5 agent River Cartwright is demoted to Slough House, a unit for disgraced operatives run by the abrasive Jackson Lamb. Lamb assigns River to surveil journalist Robert Hobden, who is linked to far-right politicians Peter Judd and Roger Simmonds. River
After being scapegoated for a colleague's mistake during a training exercise at Stansted Airport, MI5 agent River Cartwright is demoted to Slough House, a unit for disgraced operatives run by the abrasive Jackson Lamb. Lamb assigns River to surveil journalist Robert Hobden, who is linked to far-right politicians Peter Judd and Roger Simmonds. River
No.
overall
After being scapegoated for a colleague's mistake during a training exercise at Stansted Airport, MI5 agent River Cartwright is demoted to Slough House, a unit for disgraced operatives run by the abrasive Jackson Lamb. Lamb assigns River to surveil journalist Robert Hobden, who is linked to far-right politicians Peter Judd and Roger Simmonds. River
2
2
No.
overall
2
No. in
series
2
Title
"Work Drinks"
Directed by
James Hawes
Written by
Will Smith
Original release date
1 April 2022 (2022-04-01)
Hassan's kidnappers — Moe, Larry, Curly, and Zeppo — hold him hostage in a London terrace basement, with Roger Simmonds revealed as the Sons of Albion's overseer. River, having copied Hobden's USB before delivering it to Regent's Park, realises it contains nothing and tricks rival James "Spider" Webb into confirming this. Standish suffers flashbac
Hassan's kidnappers — Moe, Larry, Curly, and Zeppo — hold him hostage in a London terrace basement, with Roger Simmonds revealed as the Sons of Albion's overseer. River, having copied Hobden's USB before delivering it to Regent's Park, realises it contains nothing and tricks rival James "Spider" Webb into confirming this. Standish suffers flashbac
No.
overall
Hassan's kidnappers — Moe, Larry, Curly, and Zeppo — hold him hostage in a London terrace basement, with Roger Simmonds revealed as the Sons of Albion's overseer. River, having copied Hobden's USB before delivering it to Regent's Park, realises it contains nothing and tricks rival James "Spider" Webb into confirming this. Standish suffers flashbac
3
3
No.
overall
3
No. in
series
3
Title
"Bad Tradecraft"
Directed by
James Hawes
Written by
Will Smith
Original release date
8 April 2022 (2022-04-08)
Sid, critically injured, is taken to the hospital by MI5 security while River is detained; Lamb frees him, deducing Jed Moody was the gunman sent after Hobden. Moody later attacks Min and Louisa at Slough House but dies in a fall during the struggle. Lamb suspects Regent's Park will blame and disown Slough House if its operation fails. Taverner rev
Sid, critically injured, is taken to the hospital by MI5 security while River is detained; Lamb frees him, deducing Jed Moody was the gunman sent after Hobden. Moody later attacks Min and Louisa at Slough House but dies in a fall during the struggle. Lamb suspects Regent's Park will blame and disown Slough House if its operation fails. Taverner rev
No.
overall
Sid, critically injured, is taken to the hospital by MI5 security while River is detained; Lamb frees him, deducing Jed Moody was the gunman sent after Hobden. Moody later attacks Min and Louisa at Slough House but dies in a fall during the struggle. Lamb suspects Regent's Park will blame and disown Slough House if its operation fails. Taverner rev
4
4
No.
overall
4
No. in
series
4
Title
"Visiting Hours"
Directed by
James Hawes
Written by
Morwenna Banks
Original release date
15 April 2022 (2022-04-15)
It is revealed that Moe (real name Alan Black) was Taverner's mole, but was exposed and killed by Curly, who flees with Zeppo, Larry, and Hassan. On the road, Zeppo and Larry admit they never intended to kill Hassan and consider releasing him, alarmed by Curly's instability. Lamb and his team escape the property before MI5's security personnel, aka
It is revealed that Moe (real name Alan Black) was Taverner's mole, but was exposed and killed by Curly, who flees with Zeppo, Larry, and Hassan. On the road, Zeppo and Larry admit they never intended to kill Hassan and consider releasing him, alarmed by Curly's instability. Lamb and his team escape the property before MI5's security personnel, aka
No.
overall
It is revealed that Moe (real name Alan Black) was Taverner's mole, but was exposed and killed by Curly, who flees with Zeppo, Larry, and Hassan. On the road, Zeppo and Larry admit they never intended to kill Hassan and consider releasing him, alarmed by Curly's instability. Lamb and his team escape the property before MI5's security personnel, aka
5
5
No.
overall
5
No. in
series
5
Title
"Fiasco"
Directed by
James Hawes
Written by
Mark Denton & Jonny Stockwood
Original release date
22 April 2022 (2022-04-22)
When the team regroups, River recalls photographing Taverner secretly meeting with Black during a surveillance training exercise. Lamb returns Duffy's car to Regent's Park and confronts Taverner, who offers him a quiet dismissal and threatens Standish, also claiming Sid has died. Lamb tells her there is a bomb in the car, forcing Duffy's security t
When the team regroups, River recalls photographing Taverner secretly meeting with Black during a surveillance training exercise. Lamb returns Duffy's car to Regent's Park and confronts Taverner, who offers him a quiet dismissal and threatens Standish, also claiming Sid has died. Lamb tells her there is a bomb in the car, forcing Duffy's security t
No.
overall
When the team regroups, River recalls photographing Taverner secretly meeting with Black during a surveillance training exercise. Lamb returns Duffy's car to Regent's Park and confronts Taverner, who offers him a quiet dismissal and threatens Standish, also claiming Sid has died. Lamb tells her there is a bomb in the car, forcing Duffy's security t
6
6
No.
overall
6
No. in
series
6
Title
"Follies"
Directed by
James Hawes
Written by
Will Smith
Original release date
29 April 2022 (2022-04-29)
Taverner confronts Judd, telling him his calls to far-right allies after Hobden's visit resulted in Black's death and compromised the mission. Tearney returns from the US and orders all loose ends tied off; Taverner further lies to her about the operation. Curly drives Larry and Hassan to a forest to stage the beheading. Larry frees Hassan and atta
Taverner confronts Judd, telling him his calls to far-right allies after Hobden's visit resulted in Black's death and compromised the mission. Tearney returns from the US and orders all loose ends tied off; Taverner further lies to her about the operation. Curly drives Larry and Hassan to a forest to stage the beheading. Larry frees Hassan and atta
No.
overall
Taverner confronts Judd, telling him his calls to far-right allies after Hobden's visit resulted in Black's death and compromised the mission. Tearney returns from the US and orders all loose ends tied off; Taverner further lies to her about the operation. Curly drives Larry and Hassan to a forest to stage the beheading. Larry frees Hassan and atta
| No. overall | No. in series | Title | Directed by | Written by | Original release date | |
| 1 | 1 | "Failure's Contagious" | James Hawes | Will Smith | 1 April 2022 (2022-04-01) | |
| After being scapegoated for a colleague's mistake during a training exercise at Stansted Airport, MI5 agent River Cartwright is demoted to Slough House, a unit for disgraced operatives run by the abrasive Jackson Lamb. Lamb assigns River to surveil journalist Robert Hobden, who is linked to far-right politicians Peter Judd and Roger Simmonds. River | ||||||
| 2 | 2 | "Work Drinks" | James Hawes | Will Smith | 1 April 2022 (2022-04-01) | |
| Hassan's kidnappers — Moe, Larry, Curly, and Zeppo — hold him hostage in a London terrace basement, with Roger Simmonds revealed as the Sons of Albion's overseer. River, having copied Hobden's USB before delivering it to Regent's Park, realises it contains nothing and tricks rival James "Spider" Webb into confirming this. Standish suffers flashbac | ||||||
| 3 | 3 | "Bad Tradecraft" | James Hawes | Will Smith | 8 April 2022 (2022-04-08) | |
| Sid, critically injured, is taken to the hospital by MI5 security while River is detained; Lamb frees him, deducing Jed Moody was the gunman sent after Hobden. Moody later attacks Min and Louisa at Slough House but dies in a fall during the struggle. Lamb suspects Regent's Park will blame and disown Slough House if its operation fails. Taverner rev | ||||||
| 4 | 4 | "Visiting Hours" | James Hawes | Morwenna Banks | 15 April 2022 (2022-04-15) | |
| It is revealed that Moe (real name Alan Black) was Taverner's mole, but was exposed and killed by Curly, who flees with Zeppo, Larry, and Hassan. On the road, Zeppo and Larry admit they never intended to kill Hassan and consider releasing him, alarmed by Curly's instability. Lamb and his team escape the property before MI5's security personnel, aka | ||||||
| 5 | 5 | "Fiasco" | James Hawes | Mark Denton & Jonny Stockwood | 22 April 2022 (2022-04-22) | |
| When the team regroups, River recalls photographing Taverner secretly meeting with Black during a surveillance training exercise. Lamb returns Duffy's car to Regent's Park and confronts Taverner, who offers him a quiet dismissal and threatens Standish, also claiming Sid has died. Lamb tells her there is a bomb in the car, forcing Duffy's security t | ||||||
| 6 | 6 | "Follies" | James Hawes | Will Smith | 29 April 2022 (2022-04-29) | |
| Taverner confronts Judd, telling him his calls to far-right allies after Hobden's visit resulted in Black's death and compromised the mission. Tearney returns from the US and orders all loose ends tied off; Taverner further lies to her about the operation. Curly drives Larry and Hassan to a forest to stage the beheading. Larry frees Hassan and atta | ||||||
· Episodes › Series 2 (2022)
7
7
No.
overall
7
No. in
series
1
Title
"Last Stop"
Directed by
Jeremy Lovering
Written by
Will Smith
Original release date
2 December 2022 (2022-12-02)
Former field agent Richard "Dickie" Bough recognises and follows a man who once tortured him during the Cold War, but dies on a rail replacement bus from an apparent heart attack. Lamb investigates, finding Bough's hidden phone with the message "cicada," and has Slough House look deeper. River consults his grandfather David, who explains that "cica
Former field agent Richard "Dickie" Bough recognises and follows a man who once tortured him during the Cold War, but dies on a rail replacement bus from an apparent heart attack. Lamb investigates, finding Bough's hidden phone with the message "cicada," and has Slough House look deeper. River consults his grandfather David, who explains that "cica
No.
overall
Former field agent Richard "Dickie" Bough recognises and follows a man who once tortured him during the Cold War, but dies on a rail replacement bus from an apparent heart attack. Lamb investigates, finding Bough's hidden phone with the message "cicada," and has Slough House look deeper. River consults his grandfather David, who explains that "cica
8
8
No.
overall
8
No. in
series
2
Title
"From Upshott with Love"
Directed by
Jeremy Lovering
Written by
Morwenna Banks
Original release date
2 December 2022 (2022-12-02)
Lamb meets with Nikolai Katinsky, a former KGB agent and defector, who claims that while stationed in East Berlin he overheard Alexander Popov insisting the cicada programme remain funded after the fall of the Soviet Union. Katinsky describes Popov's associate, Andrei Chernitsky, whose appearance matches Bough's killer. In Stroud, River bribes a ta
Lamb meets with Nikolai Katinsky, a former KGB agent and defector, who claims that while stationed in East Berlin he overheard Alexander Popov insisting the cicada programme remain funded after the fall of the Soviet Union. Katinsky describes Popov's associate, Andrei Chernitsky, whose appearance matches Bough's killer. In Stroud, River bribes a ta
No.
overall
Lamb meets with Nikolai Katinsky, a former KGB agent and defector, who claims that while stationed in East Berlin he overheard Alexander Popov insisting the cicada programme remain funded after the fall of the Soviet Union. Katinsky describes Popov's associate, Andrei Chernitsky, whose appearance matches Bough's killer. In Stroud, River bribes a ta
9
9
No.
overall
9
No. in
series
3
Title
"Drinking Games"
Directed by
Jeremy Lovering
Written by
Morwenna Banks
Original release date
9 December 2022 (2022-12-09)
Piotr's gun threat to Min appears to have been a joke, and Min is invited to drink vodka with Piotr and Kyril, though the session ends abruptly when a friend arrives. Later, Min is killed in what appears to be a drunk cycling accident, but Lamb suspects foul play. Investigating the supposed driver, Rebecca, he learns she once lived in Vladivostok;
Piotr's gun threat to Min appears to have been a joke, and Min is invited to drink vodka with Piotr and Kyril, though the session ends abruptly when a friend arrives. Later, Min is killed in what appears to be a drunk cycling accident, but Lamb suspects foul play. Investigating the supposed driver, Rebecca, he learns she once lived in Vladivostok;
No.
overall
Piotr's gun threat to Min appears to have been a joke, and Min is invited to drink vodka with Piotr and Kyril, though the session ends abruptly when a friend arrives. Later, Min is killed in what appears to be a drunk cycling accident, but Lamb suspects foul play. Investigating the supposed driver, Rebecca, he learns she once lived in Vladivostok;
10
10
No.
overall
10
No. in
series
4
Title
"Cicada"
Directed by
Jeremy Lovering
Written by
Mark Denton & Jonny Stockwood
Original release date
16 December 2022 (2022-12-16)
Rebecca reveals to Lamb that Min was attacked and run over by Piotr and Kyril, then finished off by Chernitsky before his death was staged as an accident. Lamb discovers that Katinsky has been acting as a triple agent, secretly aiding the Russians in exchange for protection from consequences over his decades-old defection. Standish meets Victor Kry
Rebecca reveals to Lamb that Min was attacked and run over by Piotr and Kyril, then finished off by Chernitsky before his death was staged as an accident. Lamb discovers that Katinsky has been acting as a triple agent, secretly aiding the Russians in exchange for protection from consequences over his decades-old defection. Standish meets Victor Kry
No.
overall
Rebecca reveals to Lamb that Min was attacked and run over by Piotr and Kyril, then finished off by Chernitsky before his death was staged as an accident. Lamb discovers that Katinsky has been acting as a triple agent, secretly aiding the Russians in exchange for protection from consequences over his decades-old defection. Standish meets Victor Kry
11
11
No.
overall
11
No. in
series
5
Title
"Boardroom Politics"
Directed by
Jeremy Lovering
Written by
Mark Denton & Jonny Stockwood
Original release date
23 December 2022 (2022-12-23)
After Alex departs, Katinsky tells River that the plan is for Alex to fly a plane into the Glasshouse in a suicide attack. Duncan and Kelly discover and free River, who convinces them of Alex's true identity. River calls in a "Code September", prompting Taverner to evacuate Judd from his speech at the Royal Exchange and clear the area around the Gl
After Alex departs, Katinsky tells River that the plan is for Alex to fly a plane into the Glasshouse in a suicide attack. Duncan and Kelly discover and free River, who convinces them of Alex's true identity. River calls in a "Code September", prompting Taverner to evacuate Judd from his speech at the Royal Exchange and clear the area around the Gl
No.
overall
After Alex departs, Katinsky tells River that the plan is for Alex to fly a plane into the Glasshouse in a suicide attack. Duncan and Kelly discover and free River, who convinces them of Alex's true identity. River calls in a "Code September", prompting Taverner to evacuate Judd from his speech at the Royal Exchange and clear the area around the Gl
12
12
No.
overall
12
No. in
series
6
Title
"Old Scores"
Directed by
Jeremy Lovering
Written by
Will Smith
Original release date
30 December 2022 (2022-12-30)
Louisa learns from a dying Kyril that Pashkin's team planned to drain Nevsky's accounts during the Glasshouse evacuation. At the airfield, River discovers the bomb was a decoy and calls Taverner to retract the Code September alert, while Alex diverts her flight after the heist is complete. Roddy traces Chernitsky to Tunbridge Wells, where River's g
Louisa learns from a dying Kyril that Pashkin's team planned to drain Nevsky's accounts during the Glasshouse evacuation. At the airfield, River discovers the bomb was a decoy and calls Taverner to retract the Code September alert, while Alex diverts her flight after the heist is complete. Roddy traces Chernitsky to Tunbridge Wells, where River's g
No.
overall
Louisa learns from a dying Kyril that Pashkin's team planned to drain Nevsky's accounts during the Glasshouse evacuation. At the airfield, River discovers the bomb was a decoy and calls Taverner to retract the Code September alert, while Alex diverts her flight after the heist is complete. Roddy traces Chernitsky to Tunbridge Wells, where River's g
| No. overall | No. in series | Title | Directed by | Written by | Original release date | |
| 7 | 1 | "Last Stop" | Jeremy Lovering | Will Smith | 2 December 2022 (2022-12-02) | |
| Former field agent Richard "Dickie" Bough recognises and follows a man who once tortured him during the Cold War, but dies on a rail replacement bus from an apparent heart attack. Lamb investigates, finding Bough's hidden phone with the message "cicada," and has Slough House look deeper. River consults his grandfather David, who explains that "cica | ||||||
| 8 | 2 | "From Upshott with Love" | Jeremy Lovering | Morwenna Banks | 2 December 2022 (2022-12-02) | |
| Lamb meets with Nikolai Katinsky, a former KGB agent and defector, who claims that while stationed in East Berlin he overheard Alexander Popov insisting the cicada programme remain funded after the fall of the Soviet Union. Katinsky describes Popov's associate, Andrei Chernitsky, whose appearance matches Bough's killer. In Stroud, River bribes a ta | ||||||
| 9 | 3 | "Drinking Games" | Jeremy Lovering | Morwenna Banks | 9 December 2022 (2022-12-09) | |
| Piotr's gun threat to Min appears to have been a joke, and Min is invited to drink vodka with Piotr and Kyril, though the session ends abruptly when a friend arrives. Later, Min is killed in what appears to be a drunk cycling accident, but Lamb suspects foul play. Investigating the supposed driver, Rebecca, he learns she once lived in Vladivostok; | ||||||
| 10 | 4 | "Cicada" | Jeremy Lovering | Mark Denton & Jonny Stockwood | 16 December 2022 (2022-12-16) | |
| Rebecca reveals to Lamb that Min was attacked and run over by Piotr and Kyril, then finished off by Chernitsky before his death was staged as an accident. Lamb discovers that Katinsky has been acting as a triple agent, secretly aiding the Russians in exchange for protection from consequences over his decades-old defection. Standish meets Victor Kry | ||||||
| 11 | 5 | "Boardroom Politics" | Jeremy Lovering | Mark Denton & Jonny Stockwood | 23 December 2022 (2022-12-23) | |
| After Alex departs, Katinsky tells River that the plan is for Alex to fly a plane into the Glasshouse in a suicide attack. Duncan and Kelly discover and free River, who convinces them of Alex's true identity. River calls in a "Code September", prompting Taverner to evacuate Judd from his speech at the Royal Exchange and clear the area around the Gl | ||||||
| 12 | 6 | "Old Scores" | Jeremy Lovering | Will Smith | 30 December 2022 (2022-12-30) | |
| Louisa learns from a dying Kyril that Pashkin's team planned to drain Nevsky's accounts during the Glasshouse evacuation. At the airfield, River discovers the bomb was a decoy and calls Taverner to retract the Code September alert, while Alex diverts her flight after the heist is complete. Roddy traces Chernitsky to Tunbridge Wells, where River's g | ||||||
· Episodes › Series 3 (2023)
13
13
No.
overall
13
No. in
series
1
Title
"Strange Games"
Directed by
Saul Metzstein
Written by
Will Smith
Original release date
29 November 2023 (2023-11-29)
British intelligence officers and lovers Sean Donovan and Alison Dunn are stationed in Istanbul. Suspicious that she has stolen a classified embassy file, Donovan tails Dunn through the city but loses her. Dunn exchanges the file, labelled "Footprint", with an unknown man before being murdered; Donovan finds her body. A year later, Slough House con
British intelligence officers and lovers Sean Donovan and Alison Dunn are stationed in Istanbul. Suspicious that she has stolen a classified embassy file, Donovan tails Dunn through the city but loses her. Dunn exchanges the file, labelled "Footprint", with an unknown man before being murdered; Donovan finds her body. A year later, Slough House con
No.
overall
British intelligence officers and lovers Sean Donovan and Alison Dunn are stationed in Istanbul. Suspicious that she has stolen a classified embassy file, Donovan tails Dunn through the city but loses her. Dunn exchanges the file, labelled "Footprint", with an unknown man before being murdered; Donovan finds her body. A year later, Slough House con
14
14
No.
overall
14
No. in
series
2
Title
"Hard Lessons"
Directed by
Saul Metzstein
Written by
Will Smith
Original release date
29 November 2023 (2023-11-29)
River rushes alone to Barbican Bridge after receiving the threat, where he meets Webb, who claims to have been coerced by kidnappers who have endangered his family. Webb tells River to steal the Prime Minister's MI5 vetting file within an hour or Standish will be killed. River doubts the threat until a sniper's laser appears on Webb. To gain entry
River rushes alone to Barbican Bridge after receiving the threat, where he meets Webb, who claims to have been coerced by kidnappers who have endangered his family. Webb tells River to steal the Prime Minister's MI5 vetting file within an hour or Standish will be killed. River doubts the threat until a sniper's laser appears on Webb. To gain entry
No.
overall
River rushes alone to Barbican Bridge after receiving the threat, where he meets Webb, who claims to have been coerced by kidnappers who have endangered his family. Webb tells River to steal the Prime Minister's MI5 vetting file within an hour or Standish will be killed. River doubts the threat until a sniper's laser appears on Webb. To gain entry
15
15
No.
overall
15
No. in
series
3
Title
"Negotiating with Tigers"
Directed by
Saul Metzstein
Written by
Will Smith
Original release date
6 December 2023 (2023-12-06)
Duffy brutally beats River to punish him for embarrassing the Dogs. Lamb discovers that Standish's kidnappers are from Chieftain, a private security firm hired by Home Secretary Peter Judd as a "tiger team" to expose MI5's vulnerabilities. Judd exploits the operation's success to pressure Tearney into privatising MI5 security, benefitting Chieftain
Duffy brutally beats River to punish him for embarrassing the Dogs. Lamb discovers that Standish's kidnappers are from Chieftain, a private security firm hired by Home Secretary Peter Judd as a "tiger team" to expose MI5's vulnerabilities. Judd exploits the operation's success to pressure Tearney into privatising MI5 security, benefitting Chieftain
No.
overall
Duffy brutally beats River to punish him for embarrassing the Dogs. Lamb discovers that Standish's kidnappers are from Chieftain, a private security firm hired by Home Secretary Peter Judd as a "tiger team" to expose MI5's vulnerabilities. Judd exploits the operation's success to pressure Tearney into privatising MI5 security, benefitting Chieftain
16
16
No.
overall
16
No. in
series
4
Title
"Uninvited Guests"
Directed by
Saul Metzstein
Written by
Mark Denton & Jonny Stockwood
Original release date
13 December 2023 (2023-12-13)
Tearney reasserts control over MI5, planning to let Donovan access the Grey Books in exchange for Standish's release, then have Duffy arrest him. At the safehouse, Donovan reveals to Standish that he is working with Alison Dunn's siblings, Ben and Sarah, to expose those responsible for her death. Standish sympathises and tells them where to find th
Tearney reasserts control over MI5, planning to let Donovan access the Grey Books in exchange for Standish's release, then have Duffy arrest him. At the safehouse, Donovan reveals to Standish that he is working with Alison Dunn's siblings, Ben and Sarah, to expose those responsible for her death. Standish sympathises and tells them where to find th
No.
overall
Tearney reasserts control over MI5, planning to let Donovan access the Grey Books in exchange for Standish's release, then have Duffy arrest him. At the safehouse, Donovan reveals to Standish that he is working with Alison Dunn's siblings, Ben and Sarah, to expose those responsible for her death. Standish sympathises and tells them where to find th
17
17
No.
overall
17
No. in
series
5
Title
"Cleaning Up"
Directed by
Saul Metzstein
Written by
Mark Denton & Jonny Stockwood
Original release date
20 December 2023 (2023-12-20)
Tearney confronts Taverner, revealed as Donovan's source, who planted the "Footprint" file in the facility. It details a failed MI5 trial of a wireless hacking device Tearney approved years earlier; the malfunction nearly killed several people, and the subsequent cover-up left Footprint as the only record. Alison discovered the truth and planned to
Tearney confronts Taverner, revealed as Donovan's source, who planted the "Footprint" file in the facility. It details a failed MI5 trial of a wireless hacking device Tearney approved years earlier; the malfunction nearly killed several people, and the subsequent cover-up left Footprint as the only record. Alison discovered the truth and planned to
No.
overall
Tearney confronts Taverner, revealed as Donovan's source, who planted the "Footprint" file in the facility. It details a failed MI5 trial of a wireless hacking device Tearney approved years earlier; the malfunction nearly killed several people, and the subsequent cover-up left Footprint as the only record. Alison discovered the truth and planned to
18
18
No.
overall
18
No. in
series
6
Title
"Footprints"
Directed by
Saul Metzstein
Written by
Will Smith
Original release date
27 December 2023 (2023-12-27)
Hobbs and Sturges storm the Dunn house, but are outsmarted by Lamb, who rigged the house with booby traps. Sarah strangles Sturges to death during a struggle while Lamb kills Hobbs; Roddy crashes a bus through the house in an attempt to mount a heroic rescue, but arrives too late to help. At the file facility, Donovan sacrifices himself so River an
Hobbs and Sturges storm the Dunn house, but are outsmarted by Lamb, who rigged the house with booby traps. Sarah strangles Sturges to death during a struggle while Lamb kills Hobbs; Roddy crashes a bus through the house in an attempt to mount a heroic rescue, but arrives too late to help. At the file facility, Donovan sacrifices himself so River an
No.
overall
Hobbs and Sturges storm the Dunn house, but are outsmarted by Lamb, who rigged the house with booby traps. Sarah strangles Sturges to death during a struggle while Lamb kills Hobbs; Roddy crashes a bus through the house in an attempt to mount a heroic rescue, but arrives too late to help. At the file facility, Donovan sacrifices himself so River an
| No. overall | No. in series | Title | Directed by | Written by | Original release date | |
| 13 | 1 | "Strange Games" | Saul Metzstein | Will Smith | 29 November 2023 (2023-11-29) | |
| British intelligence officers and lovers Sean Donovan and Alison Dunn are stationed in Istanbul. Suspicious that she has stolen a classified embassy file, Donovan tails Dunn through the city but loses her. Dunn exchanges the file, labelled "Footprint", with an unknown man before being murdered; Donovan finds her body. A year later, Slough House con | ||||||
| 14 | 2 | "Hard Lessons" | Saul Metzstein | Will Smith | 29 November 2023 (2023-11-29) | |
| River rushes alone to Barbican Bridge after receiving the threat, where he meets Webb, who claims to have been coerced by kidnappers who have endangered his family. Webb tells River to steal the Prime Minister's MI5 vetting file within an hour or Standish will be killed. River doubts the threat until a sniper's laser appears on Webb. To gain entry | ||||||
| 15 | 3 | "Negotiating with Tigers" | Saul Metzstein | Will Smith | 6 December 2023 (2023-12-06) | |
| Duffy brutally beats River to punish him for embarrassing the Dogs. Lamb discovers that Standish's kidnappers are from Chieftain, a private security firm hired by Home Secretary Peter Judd as a "tiger team" to expose MI5's vulnerabilities. Judd exploits the operation's success to pressure Tearney into privatising MI5 security, benefitting Chieftain | ||||||
| 16 | 4 | "Uninvited Guests" | Saul Metzstein | Mark Denton & Jonny Stockwood | 13 December 2023 (2023-12-13) | |
| Tearney reasserts control over MI5, planning to let Donovan access the Grey Books in exchange for Standish's release, then have Duffy arrest him. At the safehouse, Donovan reveals to Standish that he is working with Alison Dunn's siblings, Ben and Sarah, to expose those responsible for her death. Standish sympathises and tells them where to find th | ||||||
| 17 | 5 | "Cleaning Up" | Saul Metzstein | Mark Denton & Jonny Stockwood | 20 December 2023 (2023-12-20) | |
| Tearney confronts Taverner, revealed as Donovan's source, who planted the "Footprint" file in the facility. It details a failed MI5 trial of a wireless hacking device Tearney approved years earlier; the malfunction nearly killed several people, and the subsequent cover-up left Footprint as the only record. Alison discovered the truth and planned to | ||||||
| 18 | 6 | "Footprints" | Saul Metzstein | Will Smith | 27 December 2023 (2023-12-27) | |
| Hobbs and Sturges storm the Dunn house, but are outsmarted by Lamb, who rigged the house with booby traps. Sarah strangles Sturges to death during a struggle while Lamb kills Hobbs; Roddy crashes a bus through the house in an attempt to mount a heroic rescue, but arrives too late to help. At the file facility, Donovan sacrifices himself so River an | ||||||
· Episodes › Series 4 (2024)
19
19
No.
overall
19
No. in
series
1
Title
"Identity Theft"
Directed by
Adam Randall
Written by
Will Smith
Original release date
4 September 2024 (2024-09-04)
A suicide bomb goes off at the Westacres shopping mall in London. A video goes online of the perpetrator, Robert Winters, confessing to the attack; police break into Winters's flat, but three of them are killed by a booby trap. River confesses to Louisa that he thinks his grandfather, David, is suffering from Alzheimer's and becoming paranoid. She
A suicide bomb goes off at the Westacres shopping mall in London. A video goes online of the perpetrator, Robert Winters, confessing to the attack; police break into Winters's flat, but three of them are killed by a booby trap. River confesses to Louisa that he thinks his grandfather, David, is suffering from Alzheimer's and becoming paranoid. She
No.
overall
A suicide bomb goes off at the Westacres shopping mall in London. A video goes online of the perpetrator, Robert Winters, confessing to the attack; police break into Winters's flat, but three of them are killed by a booby trap. River confesses to Louisa that he thinks his grandfather, David, is suffering from Alzheimer's and becoming paranoid. She
20
20
No.
overall
20
No. in
series
2
Title
"A Stranger Comes to Town"
Directed by
Adam Randall
Written by
Will Smith
Original release date
11 September 2024 (2024-09-11)
Having learned that the man David shot was an assassin called Bertrand, River hides David at Standish's flat, assumes Bertrand's identity and travels to the French town of Lavande to investigate. Lamb reveals to the team that River is alive, and unsuccessfully questions a mentally deteriorating David as to why he might have enemies in France. MI5 a
Having learned that the man David shot was an assassin called Bertrand, River hides David at Standish's flat, assumes Bertrand's identity and travels to the French town of Lavande to investigate. Lamb reveals to the team that River is alive, and unsuccessfully questions a mentally deteriorating David as to why he might have enemies in France. MI5 a
No.
overall
Having learned that the man David shot was an assassin called Bertrand, River hides David at Standish's flat, assumes Bertrand's identity and travels to the French town of Lavande to investigate. Lamb reveals to the team that River is alive, and unsuccessfully questions a mentally deteriorating David as to why he might have enemies in France. MI5 a
21
21
No.
overall
21
No. in
series
3
Title
"Penny for Your Thoughts"
Directed by
Adam Randall
Written by
Morwenna Banks
Original release date
18 September 2024 (2024-09-18)
River is held captive by Bertrand's mother Natasha, whose cousin rescued River from Les Arbres. Natasha reveals that the man who attacked River is Bertrand's father, Frank Harkness, who raised several other sons by different mothers at Les Arbres. River shows her a photo he retrieved from Les Arbres of Harkness with Bertrand, Robert Winters, and a
River is held captive by Bertrand's mother Natasha, whose cousin rescued River from Les Arbres. Natasha reveals that the man who attacked River is Bertrand's father, Frank Harkness, who raised several other sons by different mothers at Les Arbres. River shows her a photo he retrieved from Les Arbres of Harkness with Bertrand, Robert Winters, and a
No.
overall
River is held captive by Bertrand's mother Natasha, whose cousin rescued River from Les Arbres. Natasha reveals that the man who attacked River is Bertrand's father, Frank Harkness, who raised several other sons by different mothers at Les Arbres. River shows her a photo he retrieved from Les Arbres of Harkness with Bertrand, Robert Winters, and a
22
22
No.
overall
22
No. in
series
4
Title
"Returns"
Directed by
Adam Randall
Written by
Mark Denton & Jonny Stockwood
Original release date
25 September 2024 (2024-09-25)
Chapman tells Lamb how he was sent by David to Les Arbres 30 years earlier to give the mercenary group that operated there a cache of guns, money and "cold body" identities in exchange for a woman. Harkness's employers threaten to have him killed unless he helps them cover up their involvement in Westacres by taking out Chapman and David, revealing
Chapman tells Lamb how he was sent by David to Les Arbres 30 years earlier to give the mercenary group that operated there a cache of guns, money and "cold body" identities in exchange for a woman. Harkness's employers threaten to have him killed unless he helps them cover up their involvement in Westacres by taking out Chapman and David, revealing
No.
overall
Chapman tells Lamb how he was sent by David to Les Arbres 30 years earlier to give the mercenary group that operated there a cache of guns, money and "cold body" identities in exchange for a woman. Harkness's employers threaten to have him killed unless he helps them cover up their involvement in Westacres by taking out Chapman and David, revealing
23
23
No.
overall
23
No. in
series
5
Title
"Grave Danger"
Directed by
Adam Randall
Written by
Mark Denton & Jonny Stockwood & Will Smith
Original release date
2 October 2024 (2024-10-02)
David reveals to Lamb and Standish that the woman he secretly had extracted from Les Arbres was his daughter—River's mother—whom he exchanged for the money, weapons and fake identities Harkness used to start a "deniable assassination squad" of killers trained from birth. Lamb leaves to investigate Chapman's disappearance, while having Standish take
David reveals to Lamb and Standish that the woman he secretly had extracted from Les Arbres was his daughter—River's mother—whom he exchanged for the money, weapons and fake identities Harkness used to start a "deniable assassination squad" of killers trained from birth. Lamb leaves to investigate Chapman's disappearance, while having Standish take
No.
overall
David reveals to Lamb and Standish that the woman he secretly had extracted from Les Arbres was his daughter—River's mother—whom he exchanged for the money, weapons and fake identities Harkness used to start a "deniable assassination squad" of killers trained from birth. Lamb leaves to investigate Chapman's disappearance, while having Standish take
24
24
No.
overall
24
No. in
series
6
Title
"Hello Goodbye"
Directed by
Adam Randall
Written by
Will Smith
Original release date
9 October 2024 (2024-10-09)
River is taken to meet Harkness, who confirms he is his biological father and offers to train him to be part of his organisation, which River refuses; River also deduces that Yves's bombing of Westacres was revenge against Harkness for years of abuse. The Dogs, Louisa, and Flyte converge on River's location; Harkness places a live grenade in River'
River is taken to meet Harkness, who confirms he is his biological father and offers to train him to be part of his organisation, which River refuses; River also deduces that Yves's bombing of Westacres was revenge against Harkness for years of abuse. The Dogs, Louisa, and Flyte converge on River's location; Harkness places a live grenade in River'
No.
overall
River is taken to meet Harkness, who confirms he is his biological father and offers to train him to be part of his organisation, which River refuses; River also deduces that Yves's bombing of Westacres was revenge against Harkness for years of abuse. The Dogs, Louisa, and Flyte converge on River's location; Harkness places a live grenade in River'
| No. overall | No. in series | Title | Directed by | Written by | Original release date | |
| 19 | 1 | "Identity Theft" | Adam Randall | Will Smith | 4 September 2024 (2024-09-04) | |
| A suicide bomb goes off at the Westacres shopping mall in London. A video goes online of the perpetrator, Robert Winters, confessing to the attack; police break into Winters's flat, but three of them are killed by a booby trap. River confesses to Louisa that he thinks his grandfather, David, is suffering from Alzheimer's and becoming paranoid. She | ||||||
| 20 | 2 | "A Stranger Comes to Town" | Adam Randall | Will Smith | 11 September 2024 (2024-09-11) | |
| Having learned that the man David shot was an assassin called Bertrand, River hides David at Standish's flat, assumes Bertrand's identity and travels to the French town of Lavande to investigate. Lamb reveals to the team that River is alive, and unsuccessfully questions a mentally deteriorating David as to why he might have enemies in France. MI5 a | ||||||
| 21 | 3 | "Penny for Your Thoughts" | Adam Randall | Morwenna Banks | 18 September 2024 (2024-09-18) | |
| River is held captive by Bertrand's mother Natasha, whose cousin rescued River from Les Arbres. Natasha reveals that the man who attacked River is Bertrand's father, Frank Harkness, who raised several other sons by different mothers at Les Arbres. River shows her a photo he retrieved from Les Arbres of Harkness with Bertrand, Robert Winters, and a | ||||||
| 22 | 4 | "Returns" | Adam Randall | Mark Denton & Jonny Stockwood | 25 September 2024 (2024-09-25) | |
| Chapman tells Lamb how he was sent by David to Les Arbres 30 years earlier to give the mercenary group that operated there a cache of guns, money and "cold body" identities in exchange for a woman. Harkness's employers threaten to have him killed unless he helps them cover up their involvement in Westacres by taking out Chapman and David, revealing | ||||||
| 23 | 5 | "Grave Danger" | Adam Randall | Mark Denton & Jonny Stockwood & Will Smith | 2 October 2024 (2024-10-02) | |
| David reveals to Lamb and Standish that the woman he secretly had extracted from Les Arbres was his daughter—River's mother—whom he exchanged for the money, weapons and fake identities Harkness used to start a "deniable assassination squad" of killers trained from birth. Lamb leaves to investigate Chapman's disappearance, while having Standish take | ||||||
| 24 | 6 | "Hello Goodbye" | Adam Randall | Will Smith | 9 October 2024 (2024-10-09) | |
| River is taken to meet Harkness, who confirms he is his biological father and offers to train him to be part of his organisation, which River refuses; River also deduces that Yves's bombing of Westacres was revenge against Harkness for years of abuse. The Dogs, Louisa, and Flyte converge on River's location; Harkness places a live grenade in River' | ||||||