Signal Season 1, Episode 7 : We Must Dig Deeper

About Signal Season 1, Episode 7 : We Must Dig Deeper

Jae-han arrests Se-kyu for the serial burglary case, but the culprit is freed after serving a short sentence; Kyung-tae still commits murder. Guest Stars: Choi Woo-ri, Jeong Seok-yong, Park Si-eun, Yoo Ha-bok, Lim Cheol-soo, Lee Dong-ha, Yoon Bok-sung, Park Ji-yeon, Kim Hyun-sung, Lee Na-ra, Park Jung-min,