11 episodesFirst aired 21 May 2025
E1May 202554m
Detective Hansaem suspects Ena after she fails to remember anything about her uncle's murder.
E2May 202550m
A puzzle piece arrives on the same day as a murder, and Hansaem suspects it’s no coincidence.
E3May 202552m
Ena and Hansaem warily work together to solve the case.
E4May 20251h 2m
A prime suspect emerges, but things aren't what they seem.
E5May 202557m
Another puzzle piece arrives, and a new murder case unfolds.
E6May 202558m
The meaning behind the drawings on the puzzle pieces is uncovered.
E7May 202553m
Hansaem makes a shocking discovery and becomes unsure of whom to trust.
E8May 202551m
As the investigation escalates, new suspects begin to emerge.
E9May 202549m
An unexpected suspect is arrested, shocking everyone involved.
E10Jun 202549m
A stunning truth behind the serial murders is revealed.
E11Jun 202550m
The final puzzle piece arrives will the team be able to catch the killer in time?