Signal series poster

TV SERIES · Crime / Mystery / Sci-Fi & Fantasy / Drama

Signal.

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

8.2 / 1020162 seasons24 episodesEnded

 Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.

Choose an episode Watch trailer

Created by Kim Eun-hee, Kim Won-suk

THE STORY CONTINUES

Season 1.

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

2016-01-22 · 1h 7m8.4

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

2016-01-23 · 1h 6m8.2

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

2016-01-29 · 1h 5m8.0

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

2016-01-30 · 1h 5m8.0

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

2016-02-05 · 1h 8m7.5

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

2016-02-06 · 1h 10m8.0

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

2016-02-12 · 1h 7m7.8

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?

2016-02-13 · 1h 14m8.6

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

2016-02-19 · 1h 14m8.4

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

2016-02-20 · 1h 12m7.8

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

2016-02-26 · 1h 18m7.8

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

2016-02-27 · 1h 18m8.2

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

2016-03-04 · 1h 14m8.0

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

2016-03-05 · 1h 14m8.0

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?

2016-03-11 · 1h 12m8.0

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

2016-03-12 · 1h 29m8.4

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

Cast.

Lee Je-hoon

Lee Je-hoon

Park Hae-young

Kim Hye-soo

Kim Hye-soo

Cha Soo-hyun

Cho Jin-woong

Cho Jin-woong

Lee Jae-han

YOUR NEXT CHAPTER

More series to explore.