| Crime | Date and time of crime (estimated) | Date and time of discovery | Victim and age | Location | Remarks |
| 1 | September 15, 198606:20 | September 19, 198614:00 | Lee Wan-im, 71 | Taean-eup (now called Hwaseong), Annyeong-ri (now called Annyeong-dong), pasture | Elder murdered while returning home after visiting her daughter.Evidence found: Strangled by hand, negative semen reaction |
| 2 | October 20, 198622:00 | October 23, 198614:50 | Park Hyun-sook, 25 | Taean-eup (now called Hwaseong), Jinan-ri (now called Jinan-dong), canal | Murdered after getting off the bus while returning home from Songtan after meeting with a prospective marriage partner.Evidence found: Strangled by hand, semen (blood type cannot be determined) |
| 3 | December 12, 198623:00 | April 23, 198714:00 | Kwon Jung-bon, 25 | Taean-eup (now called Hwaseong), Annyeong-ri (now called Annyeong-dong), embankment | Housewife murdered in front of her house.Evidence found: Strangled by stockings, gagged with her stockings, panties on the face, semen (blood type cannot be determined) |
| 4 | December 14, 198623:00 | December 21, 198612:30 | Lee Kye-sook, 23 | Jeongnam-myeon, Gwanhang-ri, ridge between rice fields | Murdered after getting off the bus while returning home after meeting with a prospective marriage partner.Evidence found: Hands tied, strangled and violated by an umbrella, girdle covering her face, semen (blood type cannot be determined) |
| 5 | January 10, 198720:50 | January 11, 198713:00 | Hong Jin-young, 19 | Taean-eup (now called Hwaseong), Hwanggye-ri (now called Hwanggye-dong), rice paddy | High school girl murdered after getting off the bus while returning home.Evidence found: Hands tied, gagged with her socks, strangled, semen (blood type cannot be determined) |
| 6 | May 2, 198723:00 | May 9, 198715:00 | Park Eun-joo, 29 | Taean-eup (now called Hwaseong), Jinan-ri (now called Jinan-dong), hill | Housewife murdered while going to give her husband an umbrella.Evidence found: strangled, semen (blood type cannot be determined) |
| 7 | September 7, 198721:30 | September 8, 198709:30 | Ahn Gi-soon, 54 | Paltan-myeon, Gajae-ri, canal | Housewife murdered after getting off the bus while returning home.Evidence found: Hands tied, gagged with her socks and handkerchief, strangled, peach slices, semen (blood type cannot be determined) |
| 8 | September 16, 198802:00 | September 16, 198806:50 | Park Sang-hee, 14 | Taean-eup (now called Hwaseong), Jinan-ri (now called Jinan-dong), house | Middle school girl murdered while sleeping in her room. Initially determined to be a copycat crime perpetrated by 22-year-old Yoon Sung-yeo, who served 19.5 years in jail before being released on parole in 2009. However, after Lee's confession in 2019, police reached a provisional conclusion that Lee was indeed the killer. Yoon filed for a re-trial on 13 November 2019. |
| 9 | November 15, 199018:30 (weather: foggy) | November 16, 199009:50 | Kim Mi-jung, 14 | Taean-eup (now called Hwaseong), Byeongjeom-dong (now called Byeongjeom-dong), hill | Middle school girl murdered while returning home.Evidence found: Hands and feet tied, strangled, gagged with her bra, ballpoint pen, fork, spoon and razor blade, semen (blood-type determined to be "B") |
| 10 | April 3, 199121:00 (weather: clear) | April 4, 199109:30 | Kwon Soon-sang, 69 | Dongtan-myeon, Bansong-ri (now called Bansong-dong), hill | Elder murdered after getting off the bus while returning home.Evidence found: Strangled, two footprint marks (couldn't be analyzed), semen (blood-type determined to be "B") |
| 11 | December 24, 1987 | January 4, 1988 | Kim Mi-soon, 18 | Hwaseong | |
| 12 | July 7, 1989 | N/A | Kim Hyun-jung, 8 | Hwaseong | |
| 13 | January 26, 1991 | January 27, 1991 | Park Mi-hwa, 17 | Hwaseong | |
| 14 | March 7, 1991 | March 7, 1991 | Kim Hong-bun, 27 | Cheongju, North Chungcheong Province | |
| 15 | January 13, 1994 | January 15, 1994 | Lee's sister-in-law, 18 | Bokdae-dong, Cheongju, North Chungcheong Province | Lee was sentenced to death for rape and murder. Reduced to life imprisonment by the Supreme Court. |
