Series · 2016
Signal
There are those who are born monsters, but there are also those who are made into monsters by people.
The series
Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.
Episodes
Season 1 · 16 episodes · 2016
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Episode 122 Jan 20161h 7m
You're Doomed
8.4 / 10
Profiler Park Hae-young hears a man calling his name through a discarded two-way radio. The voice starts talking about an unsolved crime.
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Episode 223 Jan 20161h 6m
We Still Have a Chance
8.2 / 10
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.
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Episode 329 Jan 20161h 5m
We Can Prevent the Killings
8.0 / 10
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.
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Episode 430 Jan 20161h 5m
We Found the Killer
8.0 / 10
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.
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Episode 55 Feb 20161h 8m
Changing the Past Alters the Present
7.5 / 10
Hae-young starts to investigate Jae-han's disappearance. Jae-han's former colleagues get suspicious about seeing Hae-young digging into the past.
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Episode 66 Feb 20161h 10m
Catch Him by All Means
8.0 / 10
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.
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Episode 712 Feb 20161h 7m
We Must Dig Deeper
7.8 / 10
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.
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Episode 813 Feb 20161h 14m
How Are You Alive?
8.6 / 10
Soo-hyun and Hae-young notice a connection between the burglary case and Da-hye, the woman who killed herself twenty years ago.
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Episode 919 Feb 20161h 14m
Hongwon-dong Case
8.4 / 10
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.
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Episode 1020 Feb 20161h 12m
Someone Has to Stop the Bad Guys
7.8 / 10
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.
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Episode 1126 Feb 20161h 18m
The One Last Case
7.8 / 10
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.
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Episode 1227 Feb 20161h 18m
The Case Was Manipulated
8.2 / 10
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.
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Episode 134 Mar 20161h 14m
The Real Assailant
8.0 / 10
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.
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Episode 145 Mar 20161h 14m
Not Now, but Maybe in the Past
8.0 / 10
Hae-young realizes the possibility that his brother could have been murdered after learning from Hye-seung that Sun-woo was not guilty.
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Episode 1511 Mar 20161h 12m
Is It Really You?
8.0 / 10
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.
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Episode 1612 Mar 20161h 29m
If You Don't Give Up
8.4 / 10
Hae-young is in critical condition after being shot while meeting with Sung-bum. In 2000, Jae-han has been captured by Bum-joo.
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Cast
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