Signal ( Air Date 2016-01-22 ) Genre Crime, Mystery, Sci-Fi & Fantasy, Drama category. Overview " Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.".
Stars: Lee Je-hoon, Kim Hye-soo, Cho Jin-woong, Jang Hyun-sung, Jung Hae-kyun, Kim Won-hae, Jung Han-bi, Lee Yoo-jun, Kim Min-gue, Kang Chan-hee, Im Hwa-young
Director: Jinnie Choi, Park Seong-il, Lee Jae-moon, INKII, Kim Eun-hee