Signal Season 1 Episode 5
Changing the Past Alters the Present
Hae-young starts to investigate Jae-han's disappearance. Jae-han's former colleagues get suspicious about seeing Hae-young digging into the past.
Guest Stars
Choi Woo-ri
Shin Yeo-jin
Kim Myeong-joong
Prison Guard
Jeong Seok-yong
Oh Gyung-tae
Park Si-eun
Oh Eun-ji
Yoo Ha-bok
Shin Dong-hoon