Proof

Everyone thought that he was the genius but his daughter had proof otherwise.

Robert is a mathematical genius. Or was. He hasn't been productive for five years, ever since insanity caused the machinery to stop working. Catherine could have been a mathematical genius but threw it all away to care for her quickly deteriorating father.

Following Robert's death, Catherine's sister implores her to leave the family home in Chicago and move to New York. And in the attic, one of Robert's former students pores through the 103 notebooks he left behind, searching for a glimmer of Robert's former brilliance.

A blossoming romance and the discovery of a significant notebook leave Catherine wondering how much of her father’s madness is hereditary.