I Know What I Saw
Mourning the loss of her father, who committed suicide, Mackenzie starts having hallucinations of killing people. They seem so real that she's convinced she's been committing these crimes; however, she can find no evidence to support this. Is she losing her marbles, or is there something sinister at work around her?
Below are the streaming services currently carrying the movie “I Know What I Saw” in the United States, along with how each offers it (subscription, buy, or rent) and a direct link. Licensing differs by market, so availability in the United States can differ from other countries.
Where to watch I Know What I Saw in United States
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Not currently available on the supported providers in United States.
Availability can change as licenses rotate — confirm on the provider’s page before subscribing. Last checked: 23 Sept 2026.