Carroll John Daly (1889–1958) was a writer of crime fiction. One of the earliest writers of hard-boiled fiction, he is best known for his detective character Race Williams, who appeared in a number of stories for Black Mask magazine in the 1920s.

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.