signal is a South Korea drama released in 2016 rated 8.9/10 with 16 episodes. This thriller series has been watched by 71,940 viewers.
Key Details
| Country |  South Korea |
| Genre | ThrillerMysterySci-Fi |
| Year | 2016 |
| Episodes | 16 |
| Duration | 01:15:00 |
| Rating | 8.9/10 |
| Director | Kim Won Suk |
| Main Cast | Lee Je Hoon, Kim Hye Soo, Jo Jin Woong |
| Type | Drama |
| Content Rating | 15+ – Teens 15 or older |
Plot & Analysis
Story Overview
Fifteen years ago, a young girl was kidnapped on the way from school, and Park Hae Yeong, who was an elementary school student at that time, witnessed the crime. A few days later, the girl was found dead, and the police were not able to find the culprit. As time went by, Hae Yeong started distrusting the police. Fifteen years later, Hae Yeong is now a police officer and criminal profiler. One day, he finds a walkie-talkie that allows him to get in contact with Detective Lee Jae Han who is in the past. Police officers Hae Yeong, Jae Han, and Cha So Hyun then set out on a journey to solve cold cases. (Source: MyDramaList)
Critical Reception
signal has received excellent reviews with a rating of 8.9/10 based on 30,110 ratings. It is ranked #62 in popularity.
Frequently Asked Questions
What is the rating of signal?
signal has a rating of 8.9/10 based on 30,110 ratings.
How many episodes does signal have?
signal has 16 episodes, each approximately 01:15:00 long.
What genre is signal?
signal is a Thriller, Mystery, Sci-Fi drama from South Korea.
Who are the main actors in signal?
The main cast of signal includes Lee Je Hoon, Kim Hye Soo, Jo Jin Woong.
When was signal released?
signal was released in 2016 in South Korea.
Data sourced from publicly available entertainment databases. Last updated: April 13, 2026.