A suspect and detective must cooperate to stop a series of murders linked by strange puzzle pieces.
EPISODE 1
Episode 1
Detective Hansaem suspects Ena after she fails to remember anything about her uncle's murder.
EPISODE 2
Episode 2
A puzzle piece arrives on the same day as a murder, and Hansaem suspects it’s no coincidence.
EPISODE 3
Episode 3
Ena and Hansaem warily work together to solve the case.
EPISODE 4
Episode 4
A prime suspect emerges, but things aren't what they seem.
EPISODE 5
Episode 5
Another puzzle piece arrives, and a new murder case unfolds.
EPISODE 6
Episode 6
The meaning behind the drawings on the puzzle pieces is uncovered.
Kim Da-mi
Son Seok-koo
Kim Sung-kyun
Hyeon Bong-sik
Kwak Ja-hyoung
Jang Gyeok-su
Yoon Jong-bin
Lee Eun-mi