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

Episode synopsis

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.

About Signal


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

More episodes from Season 1

• E1You're Doomed
• E2We Still Have a Chance
• E3We Can Prevent the Killings
• E4We Found the Killer
• E5Changing the Past Alters the Present
• E6Catch Him by All Means
• E8How Are You Alive?
• E9Hongwon-dong Case
• E10Someone Has to Stop the Bad Guys
• E11The One Last Case
• E12The Case Was Manipulated
• E13The Real Assailant