Reality changes after Hae-young exchanges information with Jae-han. Hae-young tries to work together with Jae-han in 1989 to prevent the next murder.

External Links

TMDB

Series

Signal

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

2 seasons

Where to Watch

Region: AU

Amazon Prime Video Amazon Prime Video with Ads Netflix Netflix Standard with Ads

Region: CA

Amazon Prime Video Amazon Prime Video with Ads Netflix Netflix Standard with Ads Tubi TV

Region: ES

Filmin

Region: GB

Amazon Prime Video Amazon Prime Video with Ads Netflix Netflix Standard with Ads

Region: ID

Amazon Prime Video HBO Max Netflix

Region: JP

Amazon Prime Video Amazon Prime Video with Ads Disney Plus Netflix Netflix Standard with Ads

Region: KR

Netflix Netflix Standard with Ads TVING wavve

Region: MX

Amazon Prime Video Amazon Prime Video with Ads Netflix Netflix Standard with Ads

Region: MY

Amazon Prime Video HBO Max Netflix

Region: PH

Amazon Prime Video HBO Max Netflix

Region: SG

Amazon Prime Video HBO Max Netflix

Region: TH

Amazon Prime Video HBO Max Netflix

Region: US

Amazon Prime Video Amazon Prime Video with Ads Netflix Netflix Standard with Ads The Roku Channel Tubi TV