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TMDb
137 Reviews
Signal
NR
2016
season 1
Crime
Mystery
Sci-Fi & Fantasy
Drama

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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Park Hae-young
Cha Soo-hyun
Lee Jae-han
Kim Bum-joo
Ahn Chi-soo
Kim Gye-chul
Oh Yoon-seo
Jung Heon-gi
Hwang Ui-kyung
Jang Young-chul
Park Sun-woo
Cha Soo-min
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