1 Season
16 Episode
Signal
There are those who are born monsters, but there are also those who are made into monsters by people.
Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.
- Year: 2016
- Country: South Korea
- Genre: Crime, Mystery, Sci-Fi & Fantasy, Drama
- Studio: tvN
- Keyword: corruption, investigation, murder, tragic past, butterfly effect, dark, suspense, thriller
- Director: Kim Eun-hee, Kim Won-suk
- Cast: Lee Je-hoon, Kim Hye-soo, Cho Jin-woong, Jang Hyun-sung, Jung Hae-kyun, Kim Won-hae