Wissenswertes

Roger Ebert and Gene Siskel cited this movie as Dog of the Week on their TV show.

The cast and crew ate lunch at the gas station restaurant used in this film.

Italian censorship visa # 63001 delivered on 22 August 1973.

Christopher Mitchum didn't have to audition for the lead.

When Film Ventures International acquired the U.S. Distribution rights to the film, they promoted the film as a horror film, despite it not being one.