2016 · 8.2 TMDB · 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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Lee Je-hoon (Park Hae-young) · Kim Hye-soo (Cha Soo-hyun) · Cho Jin-woong (Lee Jae-han)