Ross Macdonald was the main pseudonym used by the American-Canadian writer of crime fiction Kenneth Millar. He is best known for his series of hardboiled novels set in Southern California and featuring private detective Lew Archer. Since the 1970s, Macdonald's works have received attention in academic circles for their psychological depth, sense of place, use of language, sophisticated imagery and integration of philosophy into genre fiction. Brought up in the province of Ontario, Canada, Macdonald eventually settled in the state of California, where he died in 1983.

Hardboiled fiction is a literary genre that shares some of its characters and settings with crime fiction. The genre's typical protagonist is a detective who battles the violence of organized crime that flourished during Prohibition (1920–1933) and its aftermath, while dealing with a legal system that has become as corrupt as the organized crime itself. Rendered cynical by this cycle of violence, the detectives of hardboiled fiction are often antiheroes. Notable hardboiled detectives include Dick Tracy, Philip Marlowe, Nick Charles, Mike Hammer, Sam Spade, Lew Archer, Slam Bradley, and The Continental Op.