Donald Edwin Westlake (1933-2008) was an American author of numerous bestselling novels and nonfiction books under his own name and many pseudonyms. Best known for his mystery novels including the Dortmunder series, he also wrote screenplays, including the script for The Grifters which was nominated for an Academy Award for Best Screenplay. He won the Edgar award three times in three separate categories and in 1993 was named a Grand Master by the Mystery Writers of America.