Joseph Wambaugh, a former LAPD detective sergeant (1960-1974), is the bestselling author of twenty-one prior works of fiction and nonfiction, including The Choirboys and The Onion Field. Wambaugh joined the Los Angeles Police Department (LAPD) in 1960. He served 14 years, rising to detective sergeant. He also attended California State University, Los Angeles, where he earned Bachelor of Arts and Master of Arts degrees. In 2004, he was named Grand Master by the Mystery Writers of America. He lives in southern California.