
- HD 1080
- Runtime: 94m.
- Status: Released
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- Languages: en
- Country: United States of America
- Director: Armand Mastroianni
- Stars: Caitlin O'Heaney, Elizabeth Kemp, Dana Barron, Don Scardino, Tom Hanks
- keywords: insanity, detective, shower, blackout, bride, stalker, murder, urban legend, decapitation, serial killer, maniac, stripping, psycho killer, funhouse, dance studio, stabbed to death
- Production_studio: Metro-Goldwyn-Mayer, Lansbury/Beruh Productions
- Slogan: Every girl is frightened the night before her wedding. But this time...there's good reason!
- The He Knows You're Alone is featured in the top rankings of 1980
- #59 in Top Horror Movies of 1980
A reluctant bride-to-be is stalked by a serial killer who only kills brides and the people around them. While her friends get whacked one by one, a hard-boiled renegade cop whose bride had been killed years before tries to hunt the killer down before it is too late.