Hermione Granger completing Snape's homework assignment from the class, while Crookshanks proves vital in exposing Scabbers as Peter Pettigrew, a friend of James and Lily Potter who revealed their whereabouts to Lord Voldemort the night of their murders, and was able to wrongly implicate Sirius Black (revealed to be Harry's godfather) in the Potters' deaths. The Time-Turner enables Hermione and Harry to rescue Sirius and the hippogriff Buckbeak. Hermione is horrified by the cruelty that house-elves suffer, and establishes S.P.E.W., the Society for the Promotion of Elfish Welfare, as an effort to gain basic rights for them. She is Bulgarian Quidditch prodigy
Harry Potter and the Philosopher's Stone (film) and begins his education. The film stars Daniel Radcliffe as Harry Potter, with Rupert Grint as Ron Weasley, and Emma Watson as Hermione Granger. Warner Bros. bought the film rights to the book in 1999 for a reported £1 million ($1.65 million in 1999). Production began in the United Kingdom in 2000, with Chris Columbus being chosen to create the film from a short list of directors that included Steven Spielberg and Rob Reiner. Rowling insisted that the entire cast be British and Irish, and the film was shot at Leavesden Film Studios and historic buildings around the United Kingdom.