Signal (2016)
There are those who are born monsters, but there are also those who are made into monsters by people.
| First Air Date: | 2016, January 22 |
| Last Air Date: | 2016, March 12 |
| Status: | Returning Series |
| Seasons: | 2 |
| Episodes: | 17 |
| Created by: | Kim Won-Suk, Kim Eun-hee |
| Countries: | South Korea |
| Production: | AStory, Studio Dragon, BA Entertainment, Baram Pictures |
| Cast: | Jang Hyun-sung, Cho Jin-woong, Lee Je-hoon, Jung Hae-kyun, Kim Won-hae, Kim Hye-soo, Jung Han-bi, Lee Yoo-jun, Im Hwa-young, Kim Min-gue, Kang Chan-hee |
Overview:

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