Amateur detective

The gentleman detective, less commonly lady detective, is a type of fictional character. He (or she) has long been a staple of crime fiction, particularly in detective novels and short stories set in the United Kingdom in the Golden Age. The heroes of these adventures are typically both gentlemen by conduct and often 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.