- California Doubling: The 1991 film. While set in Philadelphia and New York City, it was mostly filmed in London.
- Dawson Casting: Then 30-year old Sean Young as the presumably early-to-mid-20's Dorothy and Ellen (Dorothy is seen at college in the opening scenes).
- Missing Trailer Scene: Glimpses of the original climax of the 1991 film are visible in the trailer.
- Playing Their Own Twin: Sean Young as twins Ellen and Dorothy, even though they're never onscreen together.
- What Could Have Been:
- River Phoenix was considered for the role of Jonathan.
- Diane Lane was considered for the roles of Dorothy and Ellen.
- The original climax shot for the movie took place at the Carlsson Copper Factory, as it happens in Ira Levin's book, but it failed test screenings so the climax was changed to Jonathan's childhood home in Pennsylvania.
Trivia / A Kiss Before Dying