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.
Yoon Ena
Kim Hansaem
Yang Jeong-ho
Choi San
Roh Su-kwang
Hyeon Ho-geun / Hangang Police Station Chief
Tae Dong-su / Captain
Yun Go-eun
Byeon Ji-yun
Nam Hyeok-su
Nam Na-ri
Lee Seung-ju
Cho Gi-beum
Kong Yeong-im
Hwang In-chan
Oh Cheol-jin
Yoon Dong-hoon
Kwon Sang-beom
Lee Mi-young
