Signal Season 1 Episode 4 - We Found the Killer

Airdate: 2016-Jan-30

Episode summary:

The ninth victim is Won-kyung, the woman Jae-han loves. A driver turns himself in, but Soo-hyun and Jae-han determine that his son is the real killer.

About Signal series:

Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.