About this series
Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.
Quick facts
First aired
2016
Seasons
2
Episodes
17
TMDB Rating
⭐ 8.2/10
Votes
186
Genre
Crime, Mystery, Sci-Fi & Fantasy, Drama
Status
Returning Series
Network
tvN
Creator
Language
KO
Seasons & Episodes
S01E01
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.
S01E02
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.
S01E03
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.
S01E04
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.
S01E05
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.
S01E06
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.
S01E07
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.
S01E08
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.
S01E09
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.
S01E10
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.
S01E11
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.
S01E12
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.
S01E13
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.
S01E14
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.
S01E15
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.
S01E16
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.
Available on
Cast
🎭 Crime
🎭 Mystery
🎭 Sci-Fi & Fantasy
🎭 Drama
🎬 Kim Eun-hee
👤 Lee Je-hoon
👤 Kim Hye-soo
👤 Cho Jin-woong
corruption
investigation
murder
tragic past
signal
changing the past or future
butterfly effect
dark
suspense
thriller
awestruck
Questions about Signal
How many seasons does Signal have?
Signal has 2 seasons and 17 episodes total.
Who created Signal?
Signal was created by Kim Eun-hee and first aired in 2016.
What genre is Signal?
Signal is a Crime, Mystery, Sci-Fi & Fantasy, Drama series.
Who stars in Signal?
The cast of Signal includes Lee Je-hoon, Kim Hye-soo, Cho Jin-woong, Jang Hyun-sung, Jung Hae-kyun.
What is the TMDB rating for Signal?
Signal has a TMDB rating of 8.2/10 based on 186 votes.
