Nine PuzzlesSeason 12025 · 11 episodesEpisodes1Episode 1Detective Hansaem suspects Ena after she fails to remember anything about her uncle's murder.2Episode 2A puzzle piece arrives on the same day as a murder, and Hansaem suspects it’s no coincidence.3Episode 3Ena and Hansaem warily work together to solve the case.4Episode 4A prime suspect emerges, but things aren't what they seem.5Episode 5Another puzzle piece arrives, and a new murder case unfolds.6Episode 6The meaning behind the drawings on the puzzle pieces is uncovered.7Episode 7Hansaem makes a shocking discovery and becomes unsure of whom to trust.8Episode 8As the investigation escalates, new suspects begin to emerge.9Episode 9An unexpected suspect is arrested, shocking everyone involved.10Episode 10A stunning truth behind the serial murders is revealed.11Episode 11The final puzzle piece arrives will the team be able to catch the killer in time?