Episode 1
Episode: 1x01 | Airdate: May 21, 2025 (56 min)
Detective Hansaem suspects Ena after she fails to remember anything about her uncle's murder.
Season 1
Episode 2
Episode: 1x02 | Airdate: May 21, 2025 (51 min)
A puzzle piece arrives on the same day as a murder, and Hansaem suspects it's no coincidence.
Episode 3
Episode: 1x03 | Airdate: May 21, 2025 (54 min)
Ena and Hansaem warily work together to solve the case.
Episode 4
Episode: 1x04 | Airdate: May 21, 2025 (64 min)
A prime suspect emerges, but things aren't what they seem.
Episode 5
Episode: 1x05 | Airdate: May 21, 2025 (59 min)
Another puzzle piece arrives, and a new murder case unfolds.
Episode 6
Episode: 1x06 | Airdate: May 21, 2025 (60 min)
The meaning behind the drawings on the puzzle pieces is uncovered.
Episode 7
Episode: 1x07 | Airdate: May 28, 2025 (54 min)
Han Saem makes a shocking discovery and becomes unsure of whom to trust.
Episode 8
Episode: 1x08 | Airdate: May 28, 2025 (52 min)
As the investigation escalates, new suspects begin to emerge.
Episode 9
Episode: 1x09 | Airdate: May 28, 2025 (50 min)
In an unexpected twist, a new suspect is arrested shortly before another victim is discovered. E-na and Han-saem risk it all to try and catch the true killer.
Episode 10
Episode: 1x10 | Airdate: Jun 4, 2025 (50 min)
A stunning truth behind the serial murders is revealed.
Episode 11
Episode: 1x11 | Airdate: Jun 4, 2025 (51 min)
The final puzzle piece arrives. Will the team be able to catch the killer in time?