Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.
이제훈
as Park Hae-young
김혜수
as Cha Soo-hyun
조진웅
as Lee Jae-han
장현성
as Kim Bum-joo
정해균
as Ahn Chi-soo
김원해
as Kim Gye-chul
정한비
as Oh Yoon-seo
이유준
as Jung Heon-gi
김민규
as Hwang Ui-kyung
강찬희
as Park Sun-woo
임화영
as Cha Soo-min
Episode 1
Episode 2
Episode 3
Episode 4
Episode 5
Episode 6
Episode 7
Episode 8
Episode 9
Episode 10
Episode 11
Episode 12
Episode 13
Episode 14
Episode 15
Episode 16
Episode 17
