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Ratings
| Ep | Season 1 |
|---|---|
| 1 | 7.8 |
| 2 | 8.0 |
| 3 | 7.8 |
| 4 | 8.1 |
| 5 | 7.5 |
| 6 | 7.8 |
| 7 | 8.6 |
| 8 | 7.7 |
| 9 | 8.0 |
| 10 | 8.5 |
| 11 | 8.6 |
Season

11 episodes · 2025
No overview available.

11 episodes · 2025
No overview available.

Detective Hansaem suspects Ena after she fails to remember anything about her uncle's murder.

A puzzle piece arrives on the same day as a murder, and Hansaem suspects it’s no coincidence.

Ena and Hansaem warily work together to solve the case.

A prime suspect emerges, but things aren't what they seem.

Another puzzle piece arrives, and a new murder case unfolds.

The meaning behind the drawings on the puzzle pieces is uncovered.

Hansaem makes a shocking discovery and becomes unsure of whom to trust.

As the investigation escalates, new suspects begin to emerge.

An unexpected suspect is arrested, shocking everyone involved.

A stunning truth behind the serial murders is revealed.

The final puzzle piece arrives will the team be able to catch the killer in time?