Season 1
(2025)
Cast
as Yoon Ena
as Kim Hansaem
as Yang Jeong-ho / Violent Crimes Unit 2 Team Chief
as Choi San / Violent Crimes Unit 2 Detective
as Roh Su-kwang / Violent Crimes Unit 2 Detective
as Hyeon Ho-geun / Hangang Police Station Chief
as Tae Dong-su / Captain
as Yun Go Eun / Criminal Analysis Team Chief
as Byeon Jiyun / Criminal Analysis Team
as Nam Hyeok-su / Criminal Analysis Team
as Nam Na Ri / Police
as Lee Seung-ju / Sunshine Mental Health Psychiatrist
as Cho Gi Bbeum / Sunshine Mental Health Nurse
as Kong Yeong Im / Ena's Housekeeper
as Hwang In Chan / Sunshine Mental Health Psychiatrist
as Oh Cheol-jin
as Yoon Dong-hoon
as Kwon Sang-beom
as Lee Mi-young
Episodes
Episode 1 7.8
May 21, 2025
Detective Hansaem suspects Ena after she fails to remember anything about her uncle's murder.
Episode 2 8.0
May 21, 2025
A puzzle piece arrives on the same day as a murder, and Hansaem suspects itโs no coincidence.
Episode 3 7.7
May 21, 2025
Ena and Hansaem warily work together to solve the case.
Episode 4 8.0
May 21, 2025
A prime suspect emerges, but things aren't what they seem.
Episode 5 7.0
May 21, 2025
Another puzzle piece arrives, and a new murder case unfolds.
Episode 6 7.7
May 21, 2025
The meaning behind the drawings on the puzzle pieces is uncovered.
Episode 7 8.8
May 28, 2025
Hansaem makes a shocking discovery and becomes unsure of whom to trust.
Episode 8 7.7
May 28, 2025
As the investigation escalates, new suspects begin to emerge.
Episode 9 8.0
May 28, 2025
An unexpected suspect is arrested, shocking everyone involved.
Episode 10 8.3
June 4, 2025
A stunning truth behind the serial murders is revealed.
Episode 11 8.3
June 4, 2025
The final puzzle piece arrives will the team be able to catch the killer in time?