With the help of one of her father's former students, Catherine, a devoted daughter, must come to terms with the death of her father, a brilliant mathematician whose genius was crippled by mental instability. After his death, a notebook containing a mathematical proof is found and Catherine claims the proof is her own work.

Gwyneth Paltrow, Anthony Hopkins, Jake Gyllenhaal, Hope Davis, Danny McCarthy. Originally released as a motion picture in 2005. Based on the award-winning play by David Auburn. Special features: Deleted scenes; from stage to screen, "The making of Proof"; director commentary. Rated PG13, for some sexual content, language, and drug references.