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A broken walkie-talkie connects 1989 to 2015. The past calls collect—and the future picks up.
Currently Airing
TMDB
82
IMDb
85
Rotten Tomatoes
96
Audience Score
96
Google
83
Watch

Signal (2016)

Time-bending proceduralGritty nostalgia tripEmotional gut-punch

Latest Episode

If You Don't Give Up
8.489 min

Season 1 • Episode 16

Latest

If You Don't Give Up

Mar 12, 2016

Hae-young is in critical condition after being shot while meeting with Sung-bum. In 2000, Jae-han has been captured by Bum-joo.

Overview

DramaMysteryCrimeSci-Fi & Fantasy


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

Flag of KRKRKorean
Content warning
murderawestrucksuspenseinvestigationthrillercorruptiondarkbutterfly effecttragic pastchanging the past or future+1 more
Institutional corruptionIntergenerational traumaSacrifice and redemption

Standout Aspects

Writing

Tight puzzle-box plotting across two decades

Acting

Cho Jin-woong's haunted 1989 detective

Production

Period detail that hurts with accuracy

Best for:Solo: Late night, headphones, full attention required·Binge: Cliffhangers will ruin your sleep schedule·Rewatch: Spot the timeline callbacks you missed
Heads up:Violence: Child abduction cases, some graphic crime scene imagery·Emotional: Multiple devastating character fates
Kim Eun-heeKim Won-suk

Creators

Kim Eun-hee, Kim Won-suk

First AiredJan 22, 2016
StatusOngoing

Vibe

Pacesteady
Intensityhigh
Tonedark
Feelheavy
Seasons2·Episodes17
tvN

Top 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

Jung Han-bi

Jung Han-bi

Oh Yoon-seo

Lee Yoo-jun

Lee Yoo-jun

Jung Heon-gi

Kim Min-gue

Kim Min-gue

Hwang Ui-kyung

Kang Chan-hee

Kang Chan-hee

Park Sun-woo

Im Hwa-young

Im Hwa-young

Cha Soo-min

Ask about Signal

Opens AI chat

Deep Dive

Trivia, insights & behind the scenes

Cultural

Based on real unsolved Korean cold cases including the Hwaseong serial murders, which adds crushing historical weight.

Insight

The walkie-talkie's 23:23 time constraint mirrors Korean emergency number 112, subtly framing time itself as a cry for help.

YouTube

[#시그널] 6분 하이라이트!

[#시그널] 6분 하이라이트!

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