Signal

E1

1. You're Doomed

22 Jan 2016 · 67m

Profiler Park Hae-young hears a man calling his name through a discarded two-way radio. The voice starts talking about an unsolved crime.

E2

2. We Still Have a Chance

23 Jan 2016 · 66m

The statute of limitations is lifted after the suspect's arrest. Hae-young joins Soo-hyun's team for the newly established cold case squad.

E3

3. We Can Prevent the Killings

29 Jan 2016 · 65m

Reality changes after Hae-young exchanges information with Jae-han. Hae-young tries to work together with Jae-han in 1989 to prevent the next murder.

E4

4. We Found the Killer

30 Jan 2016 · 65m

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.

E5

5. Changing the Past Alters the Present

5 Feb 2016 · 68m

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

E6

6. Catch Him by All Means

6 Feb 2016 · 70m

Seeking vengeance for the events that lead to the death of his daughter, Kyung-tae commits a kidnapping after getting out of prison for burglary.

E7

7. We Must Dig Deeper

12 Feb 2016 · 67m

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.

E8

8. How Are You Alive?

13 Feb 2016 · 74m

Soo-hyun and Hae-young notice a connection between the burglary case and Da-hye, the woman who killed herself twenty years ago.

E9

9. Hongwon-dong Case

19 Feb 2016 · 74m

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.

E10

10. Someone Has to Stop the Bad Guys

20 Feb 2016 · 72m

The bodies discovered in the mountains appear to be more victims of the 1997 serial murder case. Jae-han learns that Soo-hyun became team leader.

E11

11. The One Last Case

26 Feb 2016 · 78m

Hae-young and Soo-hyun arrest Jin-woo after coming to the conclusion that he is the killer. Hae-young asks Jae-han about the Inju rape case.

E12

12. The Case Was Manipulated

27 Feb 2016 · 78m

Hae-young becomes a suspect for the murder of Chi-soo. Jae-han realizes who the principle offender of the attack on Hye-seung is.

E13

13. The Real Assailant

4 Mar 2016 · 74m

Soo-hyun and the others mourn after confirming that the remains belong to Jae-han. Hae-young learns that Jae-han used to look after him in the past.

E14

14. Not Now, but Maybe in the Past

5 Mar 2016 · 74m

Hae-young realizes the possibility that his brother could have been murdered after learning from Hye-seung that Sun-woo was not guilty.

E15

15. Is It Really You?

11 Mar 2016 · 72m

Hae-young is arrested for the murder of Chi-soo. Soo-hyun hears Jae-han apologizing over the radio for not being able to prevent Sun-woo's death.

E16

16. If You Don't Give Up

12 Mar 2016 · 89m

Hae-young is in critical condition after being shot while meeting with Sung-bum. In 2000, Jae-han has been captured by Bum-joo.