Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.
2016
as Park Hae-young
as Cha Soo-hyun
as Lee Jae-han
as Kim Bum-joo
as Ahn Chi-soo
as Kim Gye-chul
as Oh Yoon-seo
as Jung Heon-gi
as Hwang Ui-kyung
as Park Sun-woo
as Cha Soo-min
