Where to watch SIGNAL: The Movie – Cold Case Investigation Unit (2021)
In US, SIGNAL: The Movie – Cold Case Investigation Unit is streaming on Amazon Prime Video, Amazon Prime Video with Ads, Shout! Factory Amazon Channel.
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| Country | Stream (subscription) | Free | Free with ads | Rent | Buy |
|---|---|---|---|---|---|
| US |  Amazon Prime Video  Amazon Prime Video with Ads  Shout! Factory Amazon Channel | — |  The Roku Channel  YouTube Free  Amazon Prime Video Free with Ads  Tubi TV  Amazon MX Player |  Amazon Video  Apple TV Store  Google Play Movies  YouTube | Amazon Video Google Play Movies YouTube |
| CA | — | — | Tubi TV | Apple TV Store YouTube | YouTube |
| JP | Amazon Prime Video  U-NEXT Amazon Prime Video with Ads  FOD | — | — | Amazon Video Apple TV Store | Apple TV Store |
Availability data via JustWatch through TMDB. Listings change often — last refreshed 10 Nov 2026.