On the eve of her twenty-fifth birthday, Catherine, a troubled young woman, has spent years caring for her brilliant but unstable father Robert, once a renowned mathematician. Now, following his death, she must deal with the aftermath, including the arrival of her estranged sister, Claire, as well as the attentions of Hal, a former student of Robert's who hopes to find valuable work in the 103 notebooks that he left behind. Over the long weekend that follows, a burgeoning romance and the discovery of a mysterious notebook draw Catherine into the most difficult problem of all: how much of her father's genius -- or madness -- will she inherit?

Proof is directed by John Birchler and features Glenn Alkinburgh as Hal, Lori Snow as Claire, Sarah Wasserbach as Catherine, and Don Wheeler as Robert.

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