He Knows You're Alone
- Rok: 1980
- Země: United States of America
- Žánr: Horor
- Studio: Metro-Goldwyn-Mayer, Lansbury/Beruh Productions
- Klíčové slovo: insanity, detective, shower, blackout, bride, stalker, murder, urban legend, decapitation, serial killer, maniac, stripping, psycho killer, funhouse, dance studio, stabbed to death
- Ředitel: Armand Mastroianni
- Obsazení: Caitlin O'Heaney, Elizabeth Kemp, Dana Barron, Don Scardino, Tom Hanks, James Rebhorn