Sam Spade is a fictional character and the protagonist of Dashiell Hammett's 1930 novel The Maltese Falcon. Spade also appeared in four lesser-known short stories by Hammett.

The Continental Op is a fictional character created by Dashiell Hammett. He is a private investigator employed as an operative of the Continental Detective Agency's San Francisco office. The stories are all told in the first person and his name is never given.