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 (film series) was released in November 2010, and "Part 2" was released in July 2011. Five of the series' eight films are among the 50 highest-grossing films of all time, with "Harry Potter and the Deathly Hallows – Part 2" the highest-grossing film in the series and one of 36 films to gross over $1 billion, ranking at number ten. Without inflation adjustment, it is the third highest-grossing film series with $7.7 billion in worldwide receipts. Late in 1997, film producer David Heyman's London offices received a copy of the first book in what would become Rowling's series of seven "Harry Potter"