Signal

• 3 Seasons
• 16 Episodes

• Crime
• Drama
• Fantasy
• Sci-Fi
• Thriller
• Korean

Actors: Lee Je-hoon, Kim Hye-su, Cho Jin-woong, Kim Won-hae

A cold-case profiler in 2015 and a detective in 1989 work together to solve a series of related murders spanning three decades using a special walkie-talkie to communicate with each other.