Question 1

What was Lucio Fulci's intended title for this film?

Accepted Answer

Lucio Fulci's intended title was 'Perversion Story'. It was released under that title in France, but the Italian release was retitled 'Una sull'altra' due to a conflict with another film.

Question 2

Why did the script originally set in Louisiana get moved to San Francisco?

Accepted Answer

The script was rewritten to take place in San Francisco as a cost-saving measure because producer Edmondo Amati wanted to shoot it back-to-back with another film, Carnal Circuit (1969).

Question 3

Which actors were replaced just before filming began?

Accepted Answer

Claudine Auger, Andrea Bosic and Luis Dávila were originally cast as Jane Bleeker, Inspector Wald and Larry, but were replaced by Elsa Martinelli, John Ireland and Jean Sobieski respectively.

Question 4

How long did it take to write the script and what was Fulci's challenge?

Accepted Answer

It reportedly took Lucio Fulci and Roberto Gianviti over a year to write the script because Fulci wanted a thriller with 'no cops' and an 'internal' story, making the finale difficult.

Question 5

What is the connection between this film and the comic 'Diabolik'?

Accepted Answer

Marisa Mell, who plays Susan/Monica, starred as Eva Kant in Mario Bava's Danger: Diabolik (1968). Earlier, Jean Sorel and Elsa Martinelli were cast as Diabolik and his lover in an unmade film.

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