

Air Date
May 21, 2025
Episodes
11 episodes
Nine Puzzles
Season 1
Episodes

1. Episode 1
Detective Hansaem suspects Ena after she fails to remember anything about her uncle's murder.

2. Episode 2
A puzzle piece arrives on the same day as a murder, and Hansaem suspects it’s no coincidence.

3. Episode 3
Ena and Hansaem warily work together to solve the case.

4. Episode 4
A prime suspect emerges, but things aren't what they seem.

5. Episode 5
Another puzzle piece arrives, and a new murder case unfolds.

6. Episode 6
The meaning behind the drawings on the puzzle pieces is uncovered.

7. Episode 7
Hansaem makes a shocking discovery and becomes unsure of whom to trust.

8. Episode 8
As the investigation escalates, new suspects begin to emerge.

9. Episode 9
An unexpected suspect is arrested, shocking everyone involved.

10. Episode 10
A stunning truth behind the serial murders is revealed.

11. Episode 11
The final puzzle piece arrives will the team be able to catch the killer in time?

Kim Da-mi
Yoon Ena

Son Suk-ku
Kim Hansaem

Kim Sung-kyun
Yang Jeong-ho / Violent Crimes Unit 2 Team Chief

Hyun Bong-sik
Choi San / Violent Crimes Unit 2 Detective

Kwak Ja-hyung
Roh Su-kwang / Violent Crimes Unit 2 Detective

Jang Gyeok-su
Hyeon Ho-geun / Hangang Police Station Chief

Jeong Man-sik
Tae Dong-su / Captain

Ahn So-yo
Yun Go Eun / Criminal Analysis Team Chief

Hong Bi-ra
Byeon Jiyun / Criminal Analysis Team

Kim Doh-yon
Nam Hyeok-su / Criminal Analysis Team

Lee Joo-young
Nam Na Ri / Police

Park Gyu-young
Lee Seung-ju / Sunshine Mental Health Psychiatrist

Ji Su-yeon
Cho Gi Bbeum / Sunshine Mental Health Nurse

Park Seong-yeon
Kong Yeong Im / Ena's Housekeeper

Roh Jae-won
Hwang In Chan / Sunshine Mental Health Psychiatrist