- HD 1080
- Runtime: 108m.
- Status: Released
- 1
- Languages: en
- Country: United States of America
- Director: Leonard Kastle
- Stars: Shirley Stoler, Tony Lo Bianco, Mary Jane Higby, Doris Roberts, Kip McArdle
- keywords: nurse, widow, alabama, lonely hearts ad, based on true story, con artist, murder, serial killer, 1940s, thrill kill
- Production_studio: Roxanne Company, American International Pictures, Cinerama Releasing Corporation
- Slogan: Love is a bitch ... called Martha.
- providers: Max, Max Amazon Channel, Criterion Channel
- The The Honeymoon Killers is featured in the top rankings of 1970
- #13 in Top Romance Movies of 1970
- #65 in Top Drama Movies of 1970
- #12 in Top Crime Movies of 1970
- #11 in Top Thriller Movies of 1970
Martha Beck, an obese nurse who is desperately lonely, joins a "correspondence club" and finds a romantic pen pal in Ray Fernandez. Martha falls hard for Ray, and is intent on sticking with him even when she discovers he's a con man who seduces lonely single women, kills them and then takes their money. She poses as Ray's sister and joins Ray on a wild killing spree, fueled by her lingering concern that Ray will leave her for one of his marks.