Catherine is a woman in her late twenties who is strongly devoted to her father, Robert, a brilliant and well-known mathematician whose grip on reality is beginning to slip away. As Robert descends into madness, Catherine begins to wonder if she may have inherited her father's mental illness along with his mathematical genius.
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Trailer
Proof | 'Save It' (HD) - Gwyneth Paltrow, Jake Gyllenhaal | MIRAMAX
Cast
Gwyneth Paltrow
Catherine Llewellyn
Anthony Hopkins
Robert Llewellyn
Jake Gyllenhaal
Harold 'Hal' Dobbs
Hope Davis
Claire Llewellyn
Danny McCarthy
Cop
Tobiasz Daszkiewicz
Limo Driver
Gary Houston
Professor Barrow
Leigh Zimmerman
Friend at Party
Colin Stinton
Theoretical Physicist
Leland Burnett
Band Vocalist
John Keefe
University Friend
Chipo Chung
University Friend
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