Robert Crais is an American author of detective fiction and former screenwriter. Crais began his career writing scripts for television shows such as Hill Street Blues, Cagney & Lacey, Quincy, Miami Vice and L.A. Law. His writing is influenced by Raymond Chandler, Dashiell Hammett, Ernest Hemingway, Robert B. Parker and John Steinbeck. Crais has won numerous awards for his crime novels. Lee Child has cited him in interviews as one of his favourite American crime writers. The novels of Robert Crais have been published in 62 countries and are bestsellers around the world. Robert Crais received the Ross Macdonald Literary Award in 2006 and was named Grand Master by the Mystery Writers of America in 2014.

Robert Brown Parker was an American writer, primarily of fiction within the mystery/detective genre. His most famous works were the 40 novels written about the fictional private detective Spenser. ABC television network developed the television series Spenser: For Hire based on the character in the mid-1980s; a series of TV movies was also produced based on the character. His works incorporate encyclopedic knowledge of the Boston metropolitan area. The Spenser novels have been cited as reviving and changing the detective genre by critics and bestselling authors including Robert Crais, Harlan Coben, and Dennis Lehane.