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The meaning behind the drawings on the puzzle pieces is uncovered.
Son Suk-ku
Kim Hansaem
Kim Sung-kyun
Yang Jeong-ho / Violent Crimes Unit 2 Team Chief
Hyun Bong-sik
Choi San / Violent Crimes Unit 2 Detective
Kwak Ja-hyung
Roh Su-kwang / Violent Crimes Unit 2 Detective
Park Gyu-young
Lee Seung-ju / Sunshine Mental Health Psychiatrist