Signal

There are those who are born monsters, but there are also those who are made into monsters by people.

2016 – 20162 seasons · 24 episodes8.2/10(207 TMDB votes)

CrimeMysterySci-Fi & FantasyDrama

Plot

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

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Lee Je-hoon

Park Hae-young

Kim Hye-soo

Cha Soo-hyun

Cho Jin-woong

Lee Jae-han