By David Auburn
Directed by Sonia Senfft von Pilsach and Henrik Zawischa
After Robert, a once brilliant mathematician, dies, his daughter Catherine is worried that she may have inherited not only her father's genius but also his mental illness. Older sister Claire is convinced she has and wants to take her to New York to be looked after.
Meanwhile, Robert's former student Hal is searching through Robert's papers. He is trying to find something of his mentor's worth saving. Are the brilliant, cutting-edge calculations he finds really Catherine's, as she claims, or are they Robert's? Can Catherine prove the proof is hers?