Ten years after discovering her murdered uncle, Ena and Detective Hansaem must cooperate to stop a series of similar murders - each linked by strange puzzle pieces.
Kim Da-mi
Yoon Ena
Son Suk-ku
Kim Hansaem
Kim Sung-kyun
Yang Jeong-ho
Hyun Bong-sik
Choi San
Kwak Ja-hyung
Roh Su-kwang
Jang Gyeok-su
Hyeon Ho-geun / Hangang Police Station Chief
Jeong Man-sik
Tae Dong-su / Captain
Ahn So-yo
Yun Go-eun
Hong Bi-ra
Byeon Ji-yun
Kim Doh-yon
Nam Hyeok-su
Lee Joo-young
Nam Na-ri
Park Gyu-young
Lee Seung-ju
Ji Su-yeon
Cho Gi-beum
Park Seong-yeon
Kong Yeong-im
Roh Jae-won
Hwang In-chan
Hwang Jung-min
Oh Cheol-jin
Ji Jin-hee
Yoon Dong-hoon
Park Sung-woong
Kwon Sang-beom
Kim Ye-won
Lee Mi-young
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