Proof February 16, 2010

On the night before her 25th birthday, Catherine's father, a famous unstable mathematician whom she has spent years caring for, passes away. Following his death, she is confronted with the arrival of her estranged sister, Claire and the demands of Hal, a former student of her father's, who believes there is valuable work amongst the 103 notebooks he left behind. Through the long weekend, Catherine begins to question how much of her father's madness or genius she will inherit.