Episodes
Season 1 — 11 episodes
E1
Episode 1
54m·7.8
Detective Hansaem suspects Ena after she fails to remember anything about her uncle's murder.
E2
Episode 2
50m·8.0
A puzzle piece arrives on the same day as a murder, and Hansaem suspects it’s no coincidence.
E3
Episode 3
52m·7.8
Ena and Hansaem warily work together to solve the case.
E4
Episode 4
62m·8.1
A prime suspect emerges, but things aren't what they seem.
E5
Episode 5
57m·7.5
Another puzzle piece arrives, and a new murder case unfolds.
E6
Episode 6
58m·7.8
The meaning behind the drawings on the puzzle pieces is uncovered.
E7
Episode 7
53m·8.8
Hansaem makes a shocking discovery and becomes unsure of whom to trust.
E8
Episode 8
51m·7.7
As the investigation escalates, new suspects begin to emerge.
E9
Episode 9
49m·8.0
An unexpected suspect is arrested, shocking everyone involved.
E10
Episode 10
49m·8.5
A stunning truth behind the serial murders is revealed.
E11
Episode 11
50m·8.6
The final puzzle piece arrives will the team be able to catch the killer in time?
