Once a Sinner
As Diana Barry is preparing to leave New York to marry inventor Tommy Mason she is offered financial assistance from her ex-lover Dick Kent, who still has a thing for her. Refusing she heads to Sparta, where she informs Tommy of her affair with the older man. Tommy tells her that he doesn't want to know the man's name or any details and Diana is happy to forget the past and move on. This decision comes to bite them a year later though, when Kent returns into the picture.
Below are the streaming services currently carrying the movie “Once a Sinner” in Canada, along with how each offers it (subscription, buy, or rent) and a direct link. Licensing differs by market, so availability in Canada can differ from other countries.
Where to watch Once a Sinner in Canada
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Not currently available on the supported providers in Canada.
Availability can change as licenses rotate — confirm on the provider’s page before subscribing. Last checked: 18 Sept 2026.