Series Brief
Overview
A fiercely competitive police officer and an idealistic prosecutor, former high school classmates, reunite while investigating a nationwide serial murder case, pulling them into both a dangerous pursuit and an unresolved personal past.
Next Signal
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Featured Players
Cast 26
Song Geon-hee
as Lee Ki-bum / Cha Young-beom
Yoo Seung-mok
as Cha Mu-jin
Park Hae-soo
as Kang Tae-ju
Lee Hee-jun
as Cha Si-young
Kwak Sun-young
as Seo Ji-won
Seo Ji-hye
as Kang Soon-young
Jung Moon-sung
as Lee Ki-hwan
Bek Hyun-jin
as Kim Man-chun
Lee Suk-hyeong
as Woon-hee
Kim Hwan-hee
as Min-ji
Show all 26 cast Hide full cast
Signal Match
Cast Similarity
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3 shared cast members
Shared
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Thirty-Nine
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Pro Bono
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Karma
2 shared cast members
Shared
Park Hae-soo, Lee Hee-jun
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2 shared cast members
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Kwak Sun-young, Lee Hee-jun
Divorce Attorney Shin
2 shared cast members
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Jung Moon-sung, Ahn Soo-ho
Family by Choice
2 shared cast members
Shared
Song Geon-hee, Seo Ji-hye
Squid Game
2 shared cast members
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Oh Tae-eun, Park Hae-soo
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2 shared cast members
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Lee Suk-hyeong, Kwak Ji-sook
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2 shared cast members
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Topic Overlay
Topic Keyword Similarity
Sherlock
4 shared keywords
Topics
detective, investigation, police
+1 more
Black Bird
3 shared keywords
Topics
detective, serial killer, investigation
Devil in Disguise: John Wayne Gacy
3 shared keywords
Topics
detective, serial killer, investigation
Vera
3 shared keywords
Topics
detective, police, police procedural
Death in Paradise
3 shared keywords
Topics
detective, investigation, police
CSI: Crime Scene Investigation
3 shared keywords
Topics
detective, police, police procedural
The Chestnut Man
3 shared keywords
Topics
detective, serial killer, investigation
The Long Shadow
3 shared keywords
Topics
serial killer, police, police procedural
True Detective
3 shared keywords
Topics
detective, serial killer, investigation
Copycat Killer
2 shared keywords
Topics
serial killer, investigation
Keyword Cloud
Keywords
detective
investigation
police
serial killer
buddy cop
police procedural
crime thriller
Technical Sheet
Details
- First Aired
- April 20, 2026
- Status
- Ended
- Episode Runtime
- 65 minutes
- Origin
- KR
- TMDB Votes
- 10