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Signal
Crime
Mystery
Sci-Fi & Fantasy
Drama

Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.
Top Cast
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
Kim Won-hae
Kim Gye-chul
Jung Han-bi
Oh Yoon-seo
Lee Yoo-jun
Jung Heon-gi
Kim Min-gue
Hwang Ui-kyung
Kang Chan-hee
Park Sun-woo
Episodes
1
You're Doomed
Jan 22, 2016
2
We Still Have a Chance
Jan 23, 2016
3
We Can Prevent the Killings
Jan 29, 2016
4
We Found the Killer
Jan 30, 2016
5
Changing the Past Alters the Present
Feb 05, 2016
6
Catch Him by All Means
Feb 06, 2016
7
We Must Dig Deeper
Feb 12, 2016
8
How Are You Alive?
Feb 13, 2016
9
Hongwon-dong Case
Feb 19, 2016
10
Someone Has to Stop the Bad Guys
Feb 20, 2016
11
The One Last Case
Feb 26, 2016
12
The Case Was Manipulated
Feb 27, 2016
13
The Real Assailant
Mar 04, 2016
14
Not Now, but Maybe in the Past
Mar 05, 2016
15
Is It Really You?
Mar 11, 2016
16
If You Don't Give Up
Mar 12, 2016
