Homonym: gumshoe (Detective)
A "gumshoe" is a slang term for a detective or investigator, often used in the context of private detectives. The term originated in the early 20th century, referring to the soft-soled shoes worn by detectives, which allowed them to move quietly while gathering information or following suspects.
Gumshoes are typically portrayed in literature and film, especially in the noir genre, where they often solve crimes or uncover secrets. Famous gumshoe characters include Sam Spade from Dashiell Hammett's "The Maltese Falcon" and Philip Marlowe from Raymond Chandler's works.