Signal K-Drama Guide: Cast and Watch Facts
A TMDB-backed guide to Signal, including cast, release facts, genres and watch-provider notes.

Signal (2016) — an evergreen reference for this TV series: the essentials, the cast, where to watch and what to watch next. There are those who are born monsters, but there are also those who are made into monsters by people.
Where to watch
TMDB's U.S. watch-provider data lists Netflix, Amazon Prime Video, Netflix Standard with Ads, Amazon Prime Video with Ads. Availability changes by country and date, so check your streaming app before watching.
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
About Signal
Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.
More like Signal
- The Good Detective
- Big Mouth
- Imperfect Women
- Beyond Evil
- Emergence
- Connection
- Gangnam B-Side
- Grimm
Figures and availability come from public TMDB data and are provided as a sourced reference.
Frequently asked questions
Where can I watch Signal?
TMDB's U.S. watch-provider data lists Netflix, Amazon Prime Video, Netflix Standard with Ads, Amazon Prime Video with Ads. Availability changes by country and date, so check your streaming app before watching.
Who is in the cast of Signal?
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
Is this Signal guide official?
No. It uses TMDB data as a reference and is not endorsed or certified by TMDB.



