When told that he'd been cast in this film as a student studying at the Sorbonne, Merv Griffin supposedly remarked: "Me, playing a Frenchman, with my night-train-to-Dublin puss?!?"
This was the final film made under Merv Griffin's contract with Warner Brothers. His salary never rose above the relatively paltry sum of $250 a week, and after "Phantom" tanked, Griffin abandoned his hopes of ever being a leading man in the movies, concentrating instead on succeeding in television.
When first released in the UK, this film's violence caused it to be classified as "Adult Entertainment," and when it is shown on Turner Classic Movies now, it is rated "TV-14," the broadcast equivalent of a PG-13 theatrical rating.
Debut of actress Dolores Dorn.
To take advantage of the 3-D process in which it was originally released, throughout the film characters and objects are thrown at the lens, move toward the camera or are quickly zoomed in on. While this may have elicited gasps and applause from 1954 movie audiences, when seeing it shown "flat" as it is on television, this becomes both intrusive and distracting.