Signal (Scripted, Korean)
Genres: Crime, Thriller, Mystery
Status: To Be Determined
Premiered: 2016-01-22
Network: tvN
Country: KR
Airs on: Friday, Saturday
Air time: 20:30
Runtime: 75 minutes
Average rating: 8
Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.