Proof

The plot alternates between events immediately following the death of Robert, a brilliant mathematician at the University of Chicago whose genius was undone by crippling mental illness, and flashbacks revealing the life he shared with his daughter Catherine. Catherine is also a mathematician and was once a promising student at Northwestern University, but she struggles with living in her father's shadow and balancing her demanding studies with caring for her father, as well as the fear that she may have inherited his mental illness. At home, Robert clings to sanity by constantly bombarding Catherine with complex mathematical problems.