Signal Season 1 Episode 5 - Changing the Past Alters the Present

Airdate: 2016-Feb-05

Episode summary:

Hae-young starts to investigate Jae-han's disappearance. Jae-han's former colleagues get suspicious about seeing Hae-young digging into the past.

About Signal series:

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