"Proof" by David Auburn, which won both the Pulitzer Prize for Drama and a Tony Award for Best Play, tells the story of Catherine, a troubled young woman, who has spent years caring for her brilliant but unstable father, a famous mathematician. Catherine has inherited her father’s mathematical brilliance, but after his death, she is haunted by the fear that she might also share his debilitating mental illness. The play opens on the eve of her 25th birthday, when she is faced with dealing with her own volatile emotions; the arrival of her estranged sister Claire; and the attentions of Hal, a former student of her father, who hopes to find valuable work in 103 notebooks that her father left behind. Then Hal discovers a ground-breaking proof about prime numbers in one of the notebooks. Proof will be directed by Michael Replogle and produced by Claire Tse.