Watch the full movie "I Know What I Saw," starring Beverly Mitchell and Geraint Wyn Davies. Mourning the loss of her father, who committed suicide, Mackenzie (Beverley Mitchell of "7th Heaven" fame) 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? Follow along with her as she searches for the truth.