Proof by David Auburn at The English Theatre of Hamburg

With her father dead, Catherine faces a new challenge: holding on to her own mind amidst the chaos he left behind. Stricken by grief, Catherine is caught in a whirlwind of emotions, standing amid the ashes of her father’s life–a renowned mathematician whose brilliance was overshadowed by mental illness. Isolated from everyone but his daughter, his life ended in incoherence. And Catherine is certain she has inherited more than just his genius. When her sister Claire returns home to take control of the situation, and Hal–one of her father’s former students–begins to poke around the house, a startling mathematical proof comes to light: one that could shake the entire academic world. PROOF is the gripping story of sisterhood, fragile trust, and the delicate balance between genius and madness. At its heart are the bonds that hold a family together, the sparks of romance, and the search for proof–both mathematical and personal.