Lynn Lowry was asked by both "Playboy" and "Penthouse" magazine to pose nude for them as a direct result of acting in this picture.
Sylvester Stallone played Mike the telephone repairman in the Off-Broadway stage production of the play, but wasn't used by director Radley Metzger in the movie because Metzger thought Stallone was too "ethnic" and hence didn't fit into the European sensibility of the picture.
Claire Wilbur, a veteran stage actress, accidentally learned early on that Lynn Lowry (a novice, by comparison) was being paid more money than Wilbur. This resulted in tension throughout the filming.
The song "Where is the Girl"/"Where is the Boy" was done by musicians named 'Croatian Trio' director Radley Metzger met while shooting the film in Yugoslavia.
Claire Wilbur originally played Elvira in the Off-Broadway stage production of Jerry Douglas' play and was the only cast member from the play to reprise her part in the movie.