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Season 1
26 episodes
1. Season 1 - Episode 1

1. Season 1 - Episode 1
Haunted by a classmate's kidnapping 15 years ago, Park Hae Young becomes a police profiler who's lost faith in the police force. This all changes when he stumbles upon an old radio that's receiving transmissions from the past.
1 h 16 min
Feb 21, 2016
2. EP02

2. EP02
Solving the kidnapping draws Hae-young into the Cold Case Task Force with Su-hyun, while Jae-han from 2000 tells Hae-young something mysterious.
1 h 5 min
Jan 22, 2016
2. Season 1 - Episode 2

2. Season 1 - Episode 2
After the Kim Yoon Jung kidnapping case, the Chief of police creates a cold case squad. Their first case is the infamous Gyeonggi Nambu serial murders.
1 h 5 min
Jan 22, 2016
3. Season 1 - Episode 3

3. Season 1 - Episode 3
During the investigation of the serial murders, Park Hae Young discovers that the radio transmissions are actually connecting him to the past.
1 h 4 min
Jan 28, 2016
3. EP03

3. EP03
Hae-young is shaken after realizing their walkie-talkie conversations have changed the past. Meanwhile, Jae-han in 1989 draws suspicion because of it.
1 h 4 min
Jan 28, 2016
4. Season 1 - Episode 4

4. Season 1 - Episode 4
The cold case squad figures out who the serial killer is, but not before the wrong suspect turns himself in.
1 h 4 min
Jan 29, 2016
4. EP04

4. EP04
Despite opposition from superiors, the Task Force investigates the South Gyeonggi Serial Murder case and uncovers the suspect in a 26-year-old crime.
1 h 4 min
Jan 29, 2016
5. EP05

5. EP05
Hae-young gets closer to the truth behind Jae-han's disappearance. Meanwhile, police are in an uproar over a mysterious kidnapping that night.
1 h 7 min
Feb 4, 2016
5. Season 1 - Episode 5

5. Season 1 - Episode 5
Park Hae Young begins asking questions about Lee Jae Han. Meanwhile, the police force in Lee Jan Han's time struggles with a string of larceny cases.
1 h 7 min
Feb 4, 2016
6. EP06

6. EP06
Hae-young and the police locate the kidnapper and the victim. Jae-han continues trying to fix a past and future now dangerously intertwined.
1 h 10 min
Feb 5, 2016
6. Season 1 - Episode 6

6. Season 1 - Episode 6
Park Hae Young figures out that Oh Kyung Tae's true objective is the father of the girl he kidnaps.
1 h 10 min
Feb 5, 2016
7. Season 1 - Episode 7

7. Season 1 - Episode 7
Lee Jae Han catches the real culprit behind the burglaries, unwittingly changing the past for the worse again.
1 h 7 min
Feb 11, 2016
8. Season 1 - Episode 8

8. Season 1 - Episode 8
The cold case squad finds Shin Da Hye, who has been living under the murder victim's identity.
1 h 14 min
Feb 12, 2016
8. EP08

8. EP08
After finding Da-hye's fingerprint, the Task Force traces her whereabouts. In the past, Jae-han unravels the truth behind the 1995 serial robbery.
1 h 13 min
Feb 12, 2016
9. Season 1 - Episode 9

9. Season 1 - Episode 9
Park Hae Young uncovers another layer to Lee Jae Han's disappearance. An old demon from Cha Soo Hyun's past resurfaces.
1 h 13 min
Feb 18, 2016
10. Season 1 - Episode 10

10. Season 1 - Episode 10
The Cold Case Squad is assigned to the serial murder, but the last the victims isn't identified. Cha Soo Hyun revisits a past trauma.
1 h 11 min
Feb 19, 2016
11. Season 1 - Episode 11

11. Season 1 - Episode 11
The Cold Case Squad catches the Hongwon-dong serial killer, but Lee Jae Han's determination changes the past again.
1 h 17 min
Feb 26, 2016
11. EP11

11. EP11
Hae-young asks Jae-han to reveal the truth about a case in Inju tied to his brother. Jae-han then goes to Inju to investigate a sexual assault case.
1 h 17 min
Feb 25, 2016
12. Season 1 - Episode 12

12. Season 1 - Episode 12
Park Hae Young becomes the prime suspect for the Section Chief's murder. Meanwhile, Lee Jae Han must find out who this "one" is before it's too late.
1 h 17 min
Feb 27, 2016
12. EP12

12. EP12
The police suspect Hae-young assaulted Chi-soo, and Su-hyun is shocked to learn that Chi-soo killed Jae-han. Jae-han investigates the Inju students.
1 h 17 min
Feb 26, 2016
13. EP13

13. EP13
Su-hyun anxiously awaits DNA results to see if the remains they found match Jae-han, while Jae-han learns Hae-young is Seon-woo's younger brother.
1 h 13 min
Mar 3, 2016
13. Season 1 - Episode 13

13. Season 1 - Episode 13
The Cold Case Squad secretly reinvestigates the Injoo gang rape case. Lee Jae Han finds out the connection Park Hae Young has to the case.
1 h 13 min
Mar 3, 2016
14. Season 1 - Episode 14

14. Season 1 - Episode 14
Following the trail the Section Chief left, Park Hae Young uncovers the truth behind his brother's death. Meanwhile, Cha Soo Hyun finds Lee Jae Han's radio in Hae Young's possession.
1 h 14 min
Mar 4, 2016
15. Season 1 - Episode 15

15. Season 1 - Episode 15
Park Hae Young is framed and arrested for the murder of the Section Chief. Cha Soo Hyun sets out to save Lee Jae Han and to find the one witness who can bring down their enemy.
1 h 11 min
Dec 27, 2017



