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Jonathan and Jennifer Hart are in San Francisco to help with a charity auction. Jennifer picks up an old locket for auction and shows it to Jonathan. Jonathan quickly recognizes a picture of him and his sister who he hasn't seen since he was a child, inside. Stuart Morris approaches the Harts claiming to be Jonathan's nephew. Stuart tells them that his aunt is Mr. Harts long lost sister. Perhaps, this family reunion isn't quite what it seems.

How to Watch Hart to Hart: Secrets of the Hart Legally and Safely

If you want to stream Hart to Hart: Secrets of the Hart 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 Hart to Hart: Secrets of the Hart 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.