He Knows You're Alone
- Ane: 1980
- Peyi: United States of America
- Stil: Horror
- Studio: Metro-Goldwyn-Mayer, Lansbury/Beruh Productions
- Mo kle: insanity, detective, shower, blackout, bride, stalker, murder, urban legend, decapitation, serial killer, maniac, stripping, psycho killer, funhouse, dance studio, stabbed to death
- Direktè: Armand Mastroianni
- Distribisyon: Caitlin O'Heaney, Elizabeth Kemp, Dana Barron, Don Scardino, Tom Hanks, James Rebhorn