Signal
There are those who are born monsters, but there are also those who are made into monsters by people.
Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.
Episodes
You're Doomed
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
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
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
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
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
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
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?
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
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
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
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
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
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
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?
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
Hae-young is in critical condition after being shot while meeting with Sung-bum. In 2000, Jae-han has been captured by Bum-joo.
Trailers & More
About Signal
- Creators
- Kim Eun-hee, Kim Won-suk
- Cast
- Lee Je-hoon, Kim Hye-soo, Cho Jin-woong
- Genres
- Crime, Mystery, Sci-Fi & Fantasy, Drama
- Content rating
- TV-MA
- Original language
- Korean
- Production countries
- South Korea
- Status
- Ended
More Like This
The Good Detective
2020 · Series
A drama about the race between people who want to get closer to the truth and those who want to cover it up. Jang Seung Jo will take on the role of Oh Ji Hyuk, an elite detective of nine years who does not share his feelings with others due to pain he experienced when he was young. He is not swayed by money and power, even with the huge wealth he inherited from his uncle.
Beyond Evil
2021 · Series
As a killing resembling a cold case resurfaces in a small town, the chase for the truth falls on two policemen who each harbor secrets of their own.
Big Mouth
2022 · Series
A lawyer with a ten-percent winning rate is caught up in a murder case and becomes the notorious and genius con artist, Big Mouse, overnight. In order to survive and protect his family, he tries to reveal the true colors of the privileged people involved in a huge conspiracy.
R.J. Decker
2026 · Series
Ex-con photographer RJ Decker becomes a PI in South Florida, solving strange cases with help from his journalist ex, her cop wife, and an enigmatic woman from his past who may help or destroy him.
Grimm
2011 · Series
After Portland homicide detective Nick Burkhardt discovers he's descended from an elite line of criminal profilers known as "Grimms," he increasingly finds his responsibilities as a detective at odds with his new responsibilities as a Grimm.
Again My Life
2022 · Series
A public prosecutor is murdered while investigating corruption. But when he is “reborn” as his previous self, can he team up with a wealthy family heir to find answers?
The Bay
2019 · Series
Family Liaison Officer Lisa Armstrong becomes a little too emotionally involved with a case (to the point where she might compromise it) concerning a pair of missing Morecambe twins to whose distraught parents she is assigned.
Emergence
2019 · Series
A police chief takes in a young child she finds near the site of a mysterious accident who has no memory of what has happened. The investigation draws her into a conspiracy larger than she ever imagined, and the child’s identity is at the center of it all.
My Name
2021 · Series
Following her father's murder, a revenge-driven woman puts her trust in a powerful crime boss — and enters the police force under his direction.