Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.
Lee Je-hoon | Park Hae-Young | |
Kim Hye-soo | Cha Soo-Hyun | |
Cho Jin-woong | Lee Jae-Han | |
Jang Hyun-sung | Kim Bum-Joo | |
Jeong Hae-gyoon | Ahn Chi-Soo | |
Kim Won-hae | Kim Gye-Chul |
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