First air date: Jan 22, 2016
Rating: (8.1) based on 136 votes
Status: In production Seasons: 1
Episodes: 16
Starring: Lee Je-hoon, Kim Hye-soo, Cho Jin-woong, Jang Hyun-sung, Jung Hae-kyun
Created by: Kim Eun-hee, Kim Won-suk
Genre: Crime,
Mystery,
Sci-Fi & Fantasy,
Drama Trailer

Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.
