- HD 1080
- Runtime: 92m.
- Status: Released
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- Languages: en
- Country: United States of America
- Director: Robert Moore
- Stars: Peter Falk, Ann-Margret, Eileen Brennan, Sid Caesar, Stockard Channing
- keywords: spoof
- Production_studio: Columbia Pictures, EMI Films, Rastar Productions
- Slogan: He knows every cheap trick, cheap joke, cheap shot and cheap dame in the book.
- The The Cheap Detective is featured in the top rankings of 1978
- #47 in Top Comedy Movies of 1978
- #20 in Top Crime Movies of 1978
- #14 in Top Mystery Movies of 1978
A spoof of the entire 1940s detective genre. San Francisco private detective, Lou Pekinpaugh is accused of murdering his partner at the instigation of his mistress—his partner's wife.