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Now playing: Season 1, Episode 1 — Episode 1
Complete the puzzle.
Ten years after discovering her murdered uncle, Ena and Detective Hansaem must cooperate to stop a series of similar murders - each linked by strange puzzle pieces.
1. Episode 1
2025-05-21
Detective Hansaem suspects Ena after she fails to remember anything about her uncle's murder.
2. Episode 2
2025-05-21
A puzzle piece arrives on the same day as a murder, and Hansaem suspects it’s no coincidence.
3. Episode 3
2025-05-21
Ena and Hansaem warily work together to solve the case.
4. Episode 4
2025-05-21
A prime suspect emerges, but things aren't what they seem.
5. Episode 5
2025-05-21
Another puzzle piece arrives, and a new murder case unfolds.
6. Episode 6
2025-05-21
The meaning behind the drawings on the puzzle pieces is uncovered.
7. Episode 7
2025-05-28
Hansaem makes a shocking discovery and becomes unsure of whom to trust.
8. Episode 8
2025-05-28
As the investigation escalates, new suspects begin to emerge.
9. Episode 9
2025-05-28
An unexpected suspect is arrested, shocking everyone involved.
10. Episode 10
2025-06-04
A stunning truth behind the serial murders is revealed.
11. Episode 11
2025-06-04
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
Hyun Bong-sik
Choi San
Kwak Ja-hyung
Roh Su-kwang
Jang Kyug-su
Hyeon Ho-geun / Hangang Police Station Chief
Jeong Man-sik
Tae Dong-su / Captain
Ahn So-yo
Yun Go-eun
Hong Bi-ra
Byeon Ji-yun
Kim Doh-yon
Nam Hyeok-su
Lee Joo-young
Nam Na-ri
Park Gyu-young
Lee Seung-ju
