S01E011:07:141. You're DoomedProfiler Park Hae-young hears a man calling his name through a discarded two-way radio. The voice starts talking about an unsolved crime.Episodes — Season 1
Season pageS01E011:07:141. You're DoomedProfiler Park Hae-young hears a man calling his name through a discarded two-way radio. The voice starts talking about an unsolved crime.
S01E021:06:042. We Still Have a ChanceThe statute of limitations is lifted after the suspect's arrest. Hae-young joins Soo-hyun's team for the newly established cold case squad.
S01E031:05:503. We Can Prevent the KillingsReality 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.
S01E041:05:374. We Found the KillerThe 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.
S01E051:08:555. Changing the Past Alters the PresentHae-young starts to investigate Jae-han's disappearance. Jae-han's former colleagues get suspicious about seeing Hae-young digging into the past.
S01E061:10:096. Catch Him by All MeansSeeking vengeance for the events that lead to the death of his daughter, Kyung-tae commits a kidnapping after getting out of prison for burglary.
S01E071:07:437. We Must Dig DeeperJae-han arrests Se-kyu for the serial burglary case, but the culprit is freed after serving a short sentence; Kyung-tae still commits murder.
S01E081:14:388. 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.
S01E091:14:289. Hongwon-dong CaseHae-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.
S01E101:12:0710. Someone Has to Stop the Bad GuysThe 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.
S01E111:18:5311. The One Last CaseHae-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.
S01E121:18:0712. The Case Was ManipulatedHae-young becomes a suspect for the murder of Chi-soo. Jae-han realizes who the principle offender of the attack on Hye-seung is.
S01E131:14:0913. The Real AssailantSoo-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.
S01E141:14:3814. Not Now, but Maybe in the PastHae-young realizes the possibility that his brother could have been murdered after learning from Hye-seung that Sun-woo was not guilty.
S01E151:12:5615. 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.
S01E161:29:0216. If You Don't Give UpHae-young is in critical condition after being shot while meeting with Sung-bum. In 2000, Jae-han has been captured by Bum-joo.Where to stream Signal
Subscription
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The Roku Channel
Tubi TV
The Roku ChannelTubi TVAvailability provided by JustWatch via TMDB, details on TMDB. Offers in the United States, subject to change.
Signal synopsis
Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.
Signal cast
Lee Je-hoonPark Hae-young · 24 ep.
Kim Hye-sooCha Soo-hyun · 24 ep.
Cho Jin-woongLee Jae-han · 24 ep.
Jang Hyun-sungKim Bum-joo · 16 ep.
Jung Hae-kyunAhn Chi-soo · 16 ep.
Kim Won-haeKim Gye-chul · 16 ep.
Jung Han-biOh Yoon-seo · 16 ep.
Lee Yoo-junJung Heon-gi · 16 ep.
Kim Min-gueHwang Ui-kyung · 16 ep.
Kang Chan-heePark Sun-woo · 16 ep.
Im Hwa-youngCha Soo-min · 16 ep.
Jeon Su-jiKang Hye-seung · 6 ep.
Shin Yi-JoonKang Hye-seung (Young) · 6 ep.
Seo Ji-hoonJang Tae-jin · 6 ep.
Kim Woo-seokLee Dong-jin · 6 ep.
Son Hyun-jooJang Young-cheol · 5 ep.Signal trailer
About the series Signal
Signal is a series (crime and mystery) created by Kim Eun-hee and Kim Won-suk, airing on tvN since 2016. It has 2 seasons and 24 episodes. The series ended on March 12, 2016. Cast members include Lee Je-hoon, Kim Hye-soo and Cho Jin-woong. It is rated 8.2/10 by 205 TMDB users.
Frequently asked questions about Signal
Where to watch Signal online?
In the United States, Signal is available with a subscription on Netflix, Amazon Prime Video and Netflix Standard with Ads, for free with ads on The Roku Channel and Tubi TV (source: JustWatch via TMDB, offers subject to change). Each episode has its own page with this information.
How many seasons of Signal are there?
Signal has 2 seasons for a total of 24 episodes.
Has Signal ended?
Yes, the series has ended: the last episode aired on March 12, 2016.
When is the next episode of Signal coming out?
Episode S02E01 is scheduled for November 30, 2026.
Who stars in Signal?
The lead actors are Lee Je-hoon (Park Hae-young), Kim Hye-soo (Cha Soo-hyun), Cho Jin-woong (Lee Jae-han), Jang Hyun-sung (Kim Bum-joo), Jung Hae-kyun (Ahn Chi-soo).
