Season 1
![Signal Signal](https://photocdn.stream/webp_poster/4MzvA9GpzztBTFWw5nHENj7hU9a.webp)
Signal
Overview:
Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case. Released: 2016-01-22
Casts:
Lee Je-hoon
Kim Hye-soo
Cho Jin-woong
Jang Hyun-sung
Jung Hae-kyun
Kim Won-hae
Jung Han-bi
Lee Yoo-jun
Kim Min-gue
Son Hyun-joo
Network:
TvN