Season 1 · 16 Episodes
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Signal
Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.
★ 8.2
Rating
2
Seasons
24
Episodes
Ended
Status
Cast
Lee Je-hoon
Park Hae-young
Kim Hye-soo
Cha Soo-hyun
Cho Jin-woong
Lee Jae-han
