Before 2015, Ralph Zucker was credited as an alias of Massimo Pupillo, because it was typical for Italian filmmakers to credit themselves under Anglicized names. Producer Ralph Zucker was an American child actor in the early 1950s. In 1958, Zucker moved to Italy to work as an editor and producer. In an issue of "Video Watchdog" in 1991, Alan Upchurch credited the direction of the film solely to Zucker based on an interview with Walter Brandi, who claimed that Zucker shot the film. A few years later, Lucas Balbo interviewed Pupillo who said he let Zucker be credited as the director as he "didn't care about the film", and that he did not want his name on both this film and "Bloody Pit of Horror". Screenwriter Roberto Natale also confirmed Pupillo as the director.