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Former friends at a remote Christmas reunion face deadly consequences when a hunter targets them over their shared secret: a holiday prank that killed a woman last year.

How to Watch I Know What You Did Last Christmas Legally and Safely

If you want to stream I Know What You Did Last Christmas through reputable and legal services, there are a few good options depending on where you are. Subscription platforms like HBO Max, Disney+, Netflix, Amazon Prime Video, and Apple TV+ sometimes carry I Know What You Did Last Christmas films or related DC titles—though availability depends on your country.

If you’d rather not commit to a subscription, there are ad‑supported, free (but legal) platforms such as Tubi, Pluto TV, Peacock or Crackle (where available in your region) that occasionally host superhero films.

Lastly, don’t forget about library‑linked streaming options like Kanopy or Hoopla (if your library or university is registered), and official uploads by film distributors on YouTube—these can also give you legal access to classic movies.