Signal
2016 · TV Series · TV-MA · 72 min
★ 8.1(194)unSUB Rating
Detectives in the present discover they can communicate with a detective from years earlier through a walkie-talkie. Working across two timelines, they reopen cold cases and chase leads that were missed or wrongly closed, pushing them to question what can be changed and what must be faced.
Where to watch
Watch free on Tubi — also streaming on Paramount+, Netflix, Amazon Prime Video +1 more.
~32 hours to watch · 27 episodes.
Stream (included)
Streaming availability and prices may be inaccurate or change — verify with the provider before subscribing.
unSUB's subscription recommendations are informational only, not financial advice.
unSUB does not host or stream any content. Every link above goes to a licensed provider.
More value for your money
Similar titles, ranked by watch-hours per subscription dollar.
Details
- Original title
- 시그널
- Years
- 2016
- Release date
- 2016-01-22
- Network
- tvN
- Language
- Korean
- Rated
- TV-MA
- Runtime
- 72 min
- Max quality
- HD
- TMDB rating (input)
- 8.2/10 (194 votes)
About
You’ll likely enjoy this if you want a tense, twisty crime mystery with a time-bending hook and minimal romance, similar in vibe to Stranger or Tunnel; Not for you if you need tidy explanations, calm characters, or a straightforward pace.
Pros: gripping mystery cases; binge-worthy momentum; unique time-link hook | Cons: occasional plot holes; can get confusing late; uneven pacing at times
Themes
- corruption
- investigation
- murder
- tragic past
- signal
- changing the past or future
- butterfly effect
- dark
- suspense
- thriller
- awestruck
Cast & crew
Lee Je-hoon
as Park Hae-young
Kim Hye-soo
as Cha Soo-hyun
- KK
Koo Kyo-hwan
Cho Jin-woong
as Lee Jae-han
Jang Hyun-sung
as Kim Bum-joo
Jung Hae-kyun
as Ahn Chi-soo
Kim Won-hae
as Kim Gye-chul
Jung Han-bi
as Oh Yoon-seo
Lee Yoo-jun
as Jung Heon-gi
Kim Min-gue
as Hwang Ui-kyung
Directed by Kim Won-suk, An Tae-jin
Created by Kim Eun-hee, Kim Won-suk
Episodes2 seasons · 27 episodes
Specials3 episodes
- S0E1The Beginning60m
- S0E2Episode 260m
- S0E3Episode 360m
Season 116 episodes
- S1E1You're Doomed67mAmazon Prime VideoThe Roku ChannelTubiApple TV+Netflix
- S1E2We Still Have a Chance66mAmazon Prime VideoThe Roku ChannelTubiApple TV+Netflix
- S1E3We Can Prevent the Killings65mAmazon Prime VideoThe Roku ChannelTubiApple TV+Netflix
- S1E4We Found the Killer65mAmazon Prime VideoThe Roku ChannelTubiApple TV+Netflix
- S1E5Changing the Past Alters the Present68mAmazon Prime VideoThe Roku ChannelTubiApple TV+Netflix
- S1E6Catch Him by All Means70mAmazon Prime VideoThe Roku ChannelTubiApple TV+Netflix
- S1E7We Must Dig Deeper67mAmazon Prime VideoThe Roku ChannelTubiNetflix
- S1E8How Are You Alive?74mAmazon Prime VideoThe Roku ChannelTubiNetflix
- S1E9Hongwon-dong Case74mAmazon Prime VideoThe Roku ChannelTubiNetflix
- S1E10Someone Has to Stop the Bad Guys72mAmazon Prime VideoThe Roku ChannelTubiNetflix
- S1E11The One Last Case78mAmazon Prime VideoThe Roku ChannelTubiNetflix
- S1E12The Case Was Manipulated78mAmazon Prime VideoThe Roku ChannelTubiNetflix
- S1E13The Real Assailant74mAmazon Prime VideoThe Roku ChannelTubiNetflix
- S1E14Not Now, but Maybe in the Past74mAmazon Prime VideoThe Roku ChannelTubiNetflix
- S1E15Is It Really You?72mAmazon Prime VideoThe Roku ChannelTubiNetflix
- S1E16If You Don't Give Up89mAmazon Prime VideoThe Roku ChannelTubiNetflix
Season 28 episodes
- S2E1Episode 1
- S2E2Episode 2
- S2E3Episode 3
- S2E4Episode 4
- S2E5Episode 5
- S2E6Episode 6
- S2E7Episode 7
- S2E8Episode 8