
Watch Signal (2016) Online!
Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.
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Episode 1 - You're Doomed
Release Date: 2016-01-22Profiler 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 2 - We Still Have a Chance
Release Date: 2016-01-23The 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 3 - We Can Prevent the Killings
Release Date: 2016-01-29Reality 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 4 - We Found the Killer
Release Date: 2016-01-30The 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 5 - Changing the Past Alters the Present
Release Date: 2016-02-05Hae-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 6 - Catch Him by All Means
Release Date: 2016-02-06Seeking 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 7 - We Must Dig Deeper
Release Date: 2016-02-12Jae-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 8 - How Are You Alive?
Release Date: 2016-02-13Soo-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 9 - Hongwon Dong Case
Release Date: 2016-02-19Hae-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 10 - Someone Has to Stop the Bad Guys
Release Date: 2016-02-20The 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 11 - The One Last Case
Release Date: 2016-02-26Hae-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 12 - The Case Was Manipulated
Release Date: 2016-02-27Hae-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 13 - The Real Assailant
Release Date: 2016-03-04Soo-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 14 - Not Now, But Maybe In The Past
Release Date: 2016-03-05Hae-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 15 - Is It Really You?
Release Date: 2016-03-11Hae-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 16 - If You Don't Give Up
Release Date: 2016-03-12Hae-young is in critical condition after being shot while meeting with Sung-bum. In 2000, Jae-han has been captured by Bum-joo.