Overview
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 Maltese Falcon, first published as a serial in the pulp magazine Black Mask, is the only full-length novel by Hammett in which Spade appears. The character, however, is widely cited as a crystallizing figure in the development of hard-boiled private detective fiction—Raymond Chandler's Philip Marlowe, for instance, was strongly influenced by Spade.
Spade was a departure from Hammett's nameless and less-than-glamorous detective, The Continental Op. Spade combined several features of previous detectives, most notably his detached demeanor, keen eye for detail, and unflinching determination to achieve his own justice.
Portrayals
Spade was a new character created specifically by Hammett for The Maltese Falcon; he had not appeared in any of Hammett's previous stories. Hammett says about him:
Spade has no original. He is a dream man in the sense that he is what most of the private detectives I worked with would like to have been and in their cockier moments thought they approached. For your private detective does not—or did not ten years ago when he was my colleague—want to be an erudite solver of riddles in the Sherlock Holmes manner; he wants to be a hard and shifty fellow, able to take care of himself in any situation, able to get the best of anybody he comes in contact with, whether criminal, innocent by-stander or client.
From Wikipedia (CC BY-SA 4.0).