The daughter of a brilliant yet mentally disturbed mathematician, who recently passed away, grapples with the potential inheritance of her father's insanity. The situation becomes more complex as one of her father's former students expresses interest in searching through his papers, and her estranged sister reappears to assist in settling his affairs. In 'Proof,' the narrative revolves around the enigmatic young woman, Catherine, her manipulative sister, their brilliant but troubled father, and an unexpected suitor. Together, they are integral pieces of the puzzle in the quest for the truth behind a mysterious mathematical proof. As Catherine mourns her father's loss and fears inheriting his mental condition, her sister Claire returns to address family matters, and Hal, the father's ex-student, delves into the family's history. The revelation from an old notebook uncovers a buried family secret, testing the bonds between the sisters and complicating the budding romantic feelings between Catherine and Hal. Set against the backdrop of a suburban university town, this poignant drama by David Auburn explores themes of love and reconciliation on the tranquil back porch of a house, mirroring the simplicity and elegance of Auburn's writing.

Running Time: 2 hours with intermission