Signal

Season 1, Episode 9: Hongwon Dong Case

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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.

All Episodes - Season 1

Episode 1

You're Doomed

Episode 2

We Still Have a Chance

Episode 3

We Can Prevent the Killings

Episode 4

We Found the Killer

Episode 5

Changing the Past Alters the Present

Episode 6

Catch Him by All Means

Someone Has to Stop the Bad Guys

Episode 11

The One Last Case

Episode 12

The Case Was Manipulated

Episode 13

The Real Assailant

Episode 14

Not Now, But Maybe In The Past