Signal Season 1 Episode 9 - Hongwon Dong Case

Airdate: 2016-Feb-19

Episode summary:

Hae-young learns that Chi-soo and Jae-han met in 1999 during a case in Inju. After serving time for the crime, Hae-young's brother had killed himself.

About Signal series:

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