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Signal poster

Signal (2016)

Korean · Crime / Mystery · 15
★ 8.2 Early — still settling 201 ratings
▸ Must watch
Released 22 Jan 2016
Page updated 24 Sept 2026

Signal is streaming in South Korea on Netflix, wavve, TVING.

The verdict

Signal landed among the stronger Korean series of its release window. It's sitting at 8.2/10 on TMDB across 201 ratings, which puts it comfortably above average. In South Korea you can stream it on Netflix, wavve, TVING.

Is it worth starting?

This is 2 seasons deep — Korean crime with a mystery streak, not one for younger kids.

Why
It rates 8.2/10 on 201 ratings so far — a strong early showing.
Skip if
you dislike slow-burn procedural pacing
Best for
An episode-a-night rhythm

Story


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

Good to know

Watch with family?15 · Older kids & up
GenreCrime / Mystery
LanguageKorean
Best screenStream at home

Director

Kim Eun-hee

Cast

Lee Je-hoon
Lee Je-hoon
Park Hae-young
Kim Hye-soo
Kim Hye-soo
Cha Soo-hyun
Cho Jin-woong
Cho Jin-woong
Lee Jae-han
Jang Hyun-sung
Jang Hyun-sung
Kim Bum-joo
Jung Hae-kyun
Jung Hae-kyun
Ahn Chi-soo
Kim Won-hae
Kim Won-hae
Kim Gye-chul

Where to watch in South Korea

NetflixwavveTVING

Included with a subscription — no extra charge on these platforms.

Availability as of 24 Sept 2026 — platforms may change over time.

More: Everything new on Netflix

Trailer

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Frequently asked

Is Signal worth watching?
Must watch. It rates 8.2/10 on audience ratings. This is 2 seasons deep — Korean crime with a mystery streak, not one for younger kids.
Where can I watch Signal?
You can stream Signal in South Korea on Netflix, wavve, TVING.
Is Signal family friendly?
Signal is rated 15. Fine for older kids with guidance.
What language is Signal in?
Signal is a Korean series (Crime / Mystery).
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