Proof

Film adaptation of David Auburn's award-winning Broadway play makes the most of its four-character construct. Catherine (Paltrow), the gifted daughter of a once-brilliant mathematician (Hopkins), who in the final years of his life suffered with dementia, sits at the center of the film. A brainy introvert by nature, Catherine is forced in the wake of her father's death to seek redeeming personal value as both an academic and a daughter, while contemplating her own fragile grip on sanity.