All TV Shows
Signal poster

Signal

TV-MA
2016–2016·Returning Series·1 Seasons·17 Episodes·72 min·tvN·Friday
Studio: AStory, BA Entertainment, Baram Pictures, Studio Dragon
TMDb8.2
Available on
NetflixNetflix Standard with AdsThe Roku ChannelTubi TV
Nexus tv11091TMDb 64840IMDb tt5332206TVDB 305167
🇰🇷
Korea
Korean · Korean
KOREAN
CrimeMysterySci-Fi & FantasyDrama

Overview


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

Trailer

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
Jang Hyun-sung
Jang Hyun-sung
Kim Bum-joo
Jung Hae-kyun
Jung Hae-kyun
Ahn Chi-soo
Kim Won-hae
Kim Won-hae
Kim Gye-chul
Jung Han-bi
Jung Han-bi
Oh Yoon-seo
Lee Yoo-jun
Lee Yoo-jun
Jung Heon-gi
Kim Min-gue
Kim Min-gue
Hwang Ui-kyung
Kang Chan-hee
Kang Chan-hee
Park Sun-woo
Im Hwa-young
Im Hwa-young
Cha Soo-min

More like this

The Good Detective
The Good Detective
2020
Beyond Evil
Beyond Evil
2021
Imperfect Women
Imperfect Women
2026
Big Mouth
Big Mouth
2022
Connection
Connection
2024
My Name
My Name
2021
Gangnam B-Side
Gangnam B-Side
2024
Emergence
Emergence
2019
Mouse
Mouse
2021
The Bay
The Bay
2019
Fool Me Once
Fool Me Once
2024
Grimm
Grimm
2011

Keywords

corruptioninvestigationmurdertragic pastsignalchanging the past or futurebutterfly effectdarksuspensethrillerawestruck

Seasons

Specials3 episodes
2016
1
The Beginning
2016-01-22
60m0.0es637783
2
Episode 2
60m0.0es637784
3
Episode 3
60m0.0es637785
Season 116 episodes
2016
1
You're Doomed
2016-01-22
67m8.4es637786
2
We Still Have a Chance
2016-01-23
66m8.2es637787
3
We Can Prevent the Killings
2016-01-29
65m8.0es637788
4
We Found the Killer
2016-01-30
65m8.0es637789
5
Changing the Past Alters the Present
2016-02-05
68m7.5es637790
6
Catch Him by All Means
2016-02-06
70m8.0es637791
7
We Must Dig Deeper
2016-02-12
67m7.8es637792
8
How Are You Alive?
2016-02-13
74m8.6es637793
9
Hongwon-dong Case
2016-02-19
74m8.4es637794
10
Someone Has to Stop the Bad Guys
2016-02-20
72m7.8es637795
11
The One Last Case
2016-02-26
78m7.8es637796
12
The Case Was Manipulated
2016-02-27
78m8.2es637797
13
The Real Assailant
2016-03-04
74m8.0es637798
14
Not Now, but Maybe in the Past
2016-03-05
74m8.0es637799
15
Is It Really You?
2016-03-11
72m8.0es637800
16
If You Don't Give Up
2016-03-12
89m8.4es637801
Season 21 episodes
1
Episode 1
0.0es637802
Added: 5/14/2026Updated: 6/4/2026