- Original name: 시그널
- Type: Scripted
- Created by: Kim Eun-hee, Kim Won-suk
- Production: AStory, BA Entertainment, Baram Pictures, Studio Dragon
- Tagline: There are those who are born monsters, but there are also those who are made into monsters by people.
Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.
Most recent episode (S1E16)
Episode 16
2016-03-12
Next episode (S2E1)
Episode 1
2026-11-30
2 seasons, 24 episodes
1 d
6 h
0%, 0/24
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2 Season
November 30, 2026
S2:E1 —
November 30, 2026 • In 3 months
Episode 1
S2:E2 —
December 1, 2026 • In 3 months
Episode 2
S2:E3 —
December 7, 2026 • In 4 months
Episode 3
S2:E4 —
December 8, 2026 • In 4 months
Episode 4
S2:E5 —
December 14, 2026 • In 4 months
Episode 5
S2:E6 —
December 15, 2026 • In 4 months
Episode 6
S2:E7 —
December 21, 2026 • In 4 months
Episode 7
S2:E8 —
December 22, 2026 • In 4 months
Episode 8
keyboard_arrow_down 1 Season January 22, 2016
S1 —
2016 • 10 years ago
Complete season & Specials
S1:E1 —
January 22, 2016 • 10 years ago
You're Doomed
S1:E2 —
January 23, 2016 • 10 years ago
We Still Have a Chance
S1:E3 —
January 29, 2016 • 10 years ago
We Can Prevent the Killings
S1:E4 —
January 30, 2016 • 10 years ago
We Found the Killer
S1:E5 —
February 5, 2016 • 10 years ago
Changing the Past Alters the Present
S1:E6 —
February 6, 2016 • 10 years ago
Catch Him by All Means
S1:E7 —
February 12, 2016 • 10 years ago
We Must Dig Deeper
S1:E8 —
February 13, 2016 • 10 years ago
How Are You Alive?
S1:E9 —
February 19, 2016 • 10 years ago
Hongwon Dong Case
S1:E10 —
February 20, 2016 • 10 years ago
Someone Has to Stop the Bad Guys
S1:E11 —
February 26, 2016 • 10 years ago
The One Last Case
S1:E12 —
February 27, 2016 • 10 years ago
The Case Was Manipulated
S1:E13 —
March 4, 2016 • 10 years ago
The Real Assailant
S1:E14 —
March 5, 2016 • 10 years ago
Not Now, But Maybe In The Past
S1:E15 —
March 11, 2016 • 10 years ago
Is It Really You?
S1:E16 —
March 12, 2016 • 10 years ago
If You Don't Give Up
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Specials
January 22, 2016
S0:E1 —
January 22, 2016 • 10 years ago
The Beginning
S0:E2 —
Episode 2
S0:E3 —
Episode 3
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