Signal Season 1 Episode 3
Overview
During the investigation of the serial murders, Park Hae Young discovers that the radio transmissions are actually connecting him to the past.
Director: Kim Won-suk
Guest Star: Hong Seok-bin, Kim Jung-young, Kim Ki-chun, kim-ki-cheon, Lee Do-yeop, Lee Ki-sub, Lee Si-a, lee-gi-seob, lee-ki-seop, lee-xia, Nam Sang-ran, Sung Hyun-mi