Signal (2016)
Kernel Score: 88% · 181 ratings
Genres: Crime, Mystery, Sci-Fi & Fantasy, Drama
First aired: 2016-01-22
Seasons: 2 · 17 episodes
Where to watch Signal
- Stream: Netflix, Prime Video, WeTV
- Free with ads: The Roku Channel, Tubi
US availability, updated 2026-10-22.
Overview
Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.
Signal parents' guide: ages 14+
Parents need to know that Signal is a TV-MA crime thriller involving murder investigations and dark, tense mystery content.
- Violence & scariness: Moderate — Murder investigations and crime scenes are depicted with dark, tense tone typical of a TV-MA crime drama.
Fresh Kernels AI-assessed from the official TV-MA rating, publicly documented content. A guide for families, not an official rating.
Shows like Signal
If you liked Signal, these are the shows we'd watch next.
- Beyond Evil (2021) — 92%
- Big Mouth (2022) — 89%
- My Name (2021) — 88%
- Grimm (2011) — 91%
- Dexter (2006) — 89%
- Stranger (2017) — 90%
- Copycat Killer (2023) — 86%
- Sacred Games (2018) — 87%
Cast
- Lee Je-hoon as Park Hae-young
- Kim Hye-soo as Cha Soo-hyun
- Cho Jin-woong as Lee Jae-han
- Jang Hyun-sung as Kim Bum-joo
- Jung Hae-kyun as Ahn Chi-soo
- Kim Won-hae as Kim Gye-chul
- Jung Han-bi as Oh Yoon-seo
- Lee Yoo-jun as Jung Heon-gi
- Kim Min-gue as Hwang Ui-kyung
- Kang Chan-hee as Park Sun-woo
Signal FAQ
Is Signal good?
Signal has an 88% Kernel Score on Fresh Kernels from 181 audience ratings.
Where can I watch Signal?
In the US you can stream Signal on Netflix, Prime Video and WeTV and watch it free with ads on The Roku Channel and Tubi.
Is Signal OK for kids?
Signal is rated TV-MA. Fresh Kernels suggests ages 14+. Parents need to know that Signal is a TV-MA crime thriller involving murder investigations and dark, tense mystery content.
What shows are like Signal?
If you liked Signal, try Beyond Evil, Big Mouth, My Name and Grimm.