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“There are those who are born monsters, but there are also those who are made into monsters by people.”

8.2 / 10
2016
2 seasons
17 episodes
CrimeMysterySci-Fi & FantasyDrama


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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Trailer

[#시그널] 6분 하이라이트!

Where to Watch(AU)

Netflix
Netflix
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Streaming data provided by JustWatch via TMDB.

Cast

Lee Je-hoon

Kim Hye-soo

Cho Jin-woong

Jang Hyun-sung

Jung Hae-kyun

Kim Won-hae

Jung Han-bi

Lee Yoo-jun

Kim Min-gue

Kang Chan-hee

Im Hwa-young

Son Hyun-joo

Seasons

Communicating via a walkie-talkie that transcends time, a profiler from 2015 and a detective from 1989 join forces to tackle crimes and injustice.

  • You're Doomed

    1.You're Doomed

    8.4
    22-01-201667m

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

  • We Still Have a Chance

    2.We Still Have a Chance

    8.2
    23-01-201666m

    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.

  • We Can Prevent the Killings

    3.We Can Prevent the Killings

    8.0
    29-01-201665m

    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.

  • We Found the Killer

    4.We Found the Killer

    8.0
    30-01-201665m

    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.

  • Changing the Past Alters the Present

    5.Changing the Past Alters the Present

    7.5
    05-02-201668m

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

  • Catch Him by All Means

    6.Catch Him by All Means

    8.0
    06-02-201670m

    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.

  • We Must Dig Deeper

    7.We Must Dig Deeper

    7.8
    12-02-201667m

    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.

  • How Are You Alive?

    8.How Are You Alive?

    8.6
    13-02-201674m

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

  • Hongwon-dong Case

    9.Hongwon-dong Case

    8.4
    19-02-201674m

    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.

  • Someone Has to Stop the Bad Guys

    10.Someone Has to Stop the Bad Guys

    7.8
    20-02-201672m

    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.

  • The One Last Case

    11.The One Last Case

    7.8
    26-02-201678m

    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.

  • The Case Was Manipulated

    12.The Case Was Manipulated

    8.2
    27-02-201678m

    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.

  • The Real Assailant

    13.The Real Assailant

    8.0
    04-03-201674m

    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.

  • Not Now, but Maybe in the Past

    14.Not Now, but Maybe in the Past

    8.0
    05-03-201674m

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

  • Is It Really You?

    15.Is It Really You?

    8.0
    11-03-201672m

    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.

  • If You Don't Give Up

    16.If You Don't Give Up

    8.4
    12-03-201689m

    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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