Gentleman detective

The gentleman detective is a type of fictional character. He (or, less commonly, she) has long been a staple of crime fiction, particularly in detective novels and short stories set in Britain in the Golden Age. The heroes of these adventures are typically both gentlemen by conduct and also members of the British gentry. The literary heroes being in opposition to professional police force detectives from the working classes.

Gentlemen detectives include amateurs, private detectives and professional policemen. They are always well educated, frequently have unusual or eccentric hobbies, and are commonly found in their natural environment, an English country house. This archetype of British detective contrasts with the more "hardboiled" counterpart in American crime fiction.

Gentlemen detectives appeared early in modern detective fiction, which began in the late 19th century.

C. Auguste Dupin, created by Edgar Allan Poe, is widely considered to be the first fictional detective in English literature. He appeared in three short stories written in the 1840s: "The Murders in the Rue Morgue" (1841), "The Mystery of Marie Rogêt" (1842) and "The Purloined Letter" (1844).

Poe created Dupin before the word detective had been coined, but began many common elements of detective fiction: Dupin shares some features with the later gentleman detective. He was "…the first fictional detective of importance and the model for virtually every cerebral crime solver who followed." More specifically, Dorothy L. Sayers noted that "Sherlock Holmes modelled himself to a large extent upon (Poe's) Dupin, substituting cocaine for candlelight, with accompaniments of shag and fiddle-playing."

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