- The Danza: Jennifer Connelly as Jennifer Corvino
- Executive Meddling: Was edited down and released in the United States as Creepers, which wasn't well-received. The Director's Cut was released on DVD to better acclaim.
- Hey, It's That Guy!:
- Donald Pleasence (Dr. Loomis, Blofeld) as Prof. McGregor.
- And a somewhat lesser-known example in Michele Soavi, who plays one of the detectives near the beginning of the movie and would go on to direct his own films, the best known (and arguably the best, period) probably being Cemetery Man.
- And let's not forget the other detective, the inspector Geiger, who is actually dear Patrick Bauchau (Sydney in The Pretender).
- Reality Subtext: Argento's own mother abandoned the family after a phone call from her paramour, just like Jennifer's.