| No. overall | No. in season | Title | Directed by | Written by | Original release date |
| 1 | 1 | "Say Cheese and Die!" | Rob Letterman | Rob Letterman & Nicholas Stoller | October 13, 2023 (2023-10-13) |
| In 1993, high school loner Harold Biddle dies in a house fire. Thirty years later, Mr. Bratt inherits the Biddle House and becomes the new high school English teacher. Star high school quarterback Isaiah and his girlfriend Allison use the Biddle House for their Halloween party. Isaiah finds a Polaroid camera in the basement where Harold died and ta |
| 2 | 2 | "The Haunted Mask" | Erin O'Malley | Franklin Jin Rho | October 13, 2023 (2023-10-13) |
| Ignored at school, student Isabella vents her frustrations by online trolling. At Allison's Halloween party at the Biddle House, she finds an unusual mask in the basement. Upon wearing it, she becomes more extroverted and confident. As time passes, the mask influences her to lash out at people, especially after Lucas destroys her $3,000 drone. Nora |
| 3 | 3 | "The Cuckoo Clock of Doom" | Erin O'Malley | James Eagan | October 13, 2023 (2023-10-13) |
| The truth about James is revealed: at the Halloween party, he accidentally hit his head on a cuckoo clock and became stuck in a time loop, unable to leave the house. When he is finally able to turn off the clock and stop the time loop, he learns that every one of his previous attempts to leave the house created a duplicate. The "Dupes" trap him in |
| 4 | 4 | "Go Eat Worms" | Steve Boyum | Courtney Perdue & Baindu Saidu | October 13, 2023 (2023-10-13) |
| Lucas' father died attempting a dangerous mountain stunt. Lucas tries to honor his father's legacy by doing the stunt but is afraid. He witnesses his mother, Nora, and Margot's father, Colin, kissing and gently informs Margot of their parents' affair. To cheer her up, he shows her the tank of worms he took from the Biddle House during the Halloween |
| 5 | 5 | "Reader Beware" | Steve Boyum | Mariko Tamaki | October 13, 2023 (2023-10-13) |
| Margot's mother, Sarah, comes home after months of a trial separation with Colin. She learns that Nora is sedated under the supervision of Victoria, Isabella's mother, as Victoria is afraid Nora might reveal their involvement in the Biddle incident. However, Sarah believes Nora. Isaiah and Allison break up. Isaiah might have feelings for Margot. Ho |
| 6 | 6 | "Night of the Living Dummy" | Félix Enríquez Alcalá | Nick Mueller | October 20, 2023 (2023-10-20) |
| In 1925, Harold's great-grandfather Ephraim bought Slappy the Dummy, an evil puppet, to revitalize his career as a magician. Slappy had Ephraim retrieve the coffin of a man named Kanduu to read a spell. After a violent vision of people dying, Ephraim rejected Slappy and hid him in his basement. In 1993, Ephraim's descendants, the Biddle couple and |
| 7 | 7 | "Give Yourself Goosebumps" | Félix Enríquez Alcalá | Hilary Winston | October 27, 2023 (2023-10-27) |
| The group realizes they have been trapped in the scrapbook along with the real Mr. Bratt because Harold drew them in. Nora is released from the hospital and confronted by Harold. She flees and recovers the dummy's parts, intending to take them to her mountain cabin. She is tailed by Harold. Ben and Eliza investigate her family's mine to find that S |
| 8 | 8 | "You Can't Scare Me" | David Grossman | Nick Adams | November 3, 2023 (2023-11-03) |
| The friends fall through the pages as the scrapbook disintegrates. They meet Harold's parents' spirits, waiting for Harold so the family can move on together. Bratt manages to draw the group a way out. They escape and rush to find Nora. Harold takes back control of Bratt, knocks out Nora on the mountain, and retrieves Slappy. The children are joine |
| 9 | 9 | "Night of the Living Dummy: Part 2" | Erin O'Malley | Mariko Tamaki | November 10, 2023 (2023-11-10) |
| Months later, everyone is trying to move on from Harold Biddle's haunting. Margot's mother invites her to move to Seattle so the children go for a weekend trip to discover the city. Lucas finds it more difficult than the others to move on from their ordeal. He breaks up with Margot, envisioning that their life goals are different, and returns home. |
| 10 | 10 | "Welcome to Horrorland" | David Grossman | Rob Letterman & Nicholas Stoller | November 17, 2023 (2023-11-17) |
| A flashback reveals how Kanduu, who was once human, found a cave with mysterious carvings which made him immortal. A few years later, he meets Mahar, a struggling puppet maker in a failed circus, and makes a deal with him. Another year later, he delivers human puppets to Mahar and in return wants a perfect dummy. Mahar instead traps him in the dumm |
