Gumshoe is a 1971 British black comedy film directed (in his debut) by Stephen Frears and starring Albert Finney, Billie Whitelaw and Frank Finlay. It was written by Neville Smith. The film follows a bingo-caller who dreams of being a private eye.

Plot

Eddie Ginley works at a bingo hall in Liverpool, England, but dreams of becoming a stylish private investigator like those he has read about and seen in films. After finally placing an advertisement in a local newspaper announcing his detective services, he receives a mysterious offer. Although Ginley is inexperienced and clueless in certain aspects of investigating, he soon realises that he is entangled in a serious case involving drugs, murder, and even his own family.