When Wade Williams acquired the rights to Plan 9 aus dem Weltall (1957) in 1982, Edward D. Wood Jr.'s widow, Kathy Wood, told him this never-released film was being held by a post-production house because the lab fees hadn't been paid. Williams paid the fees and acquired this film, finally releasing it 23 years after it was filmed.
The single photo on the police station wall is that of Edward D. Wood Jr.. An unconvincing attempt has been made to turn it into a wanted poster by sticking a piece of paper above it with the word 'Wanted' written on it.
This film is the third part of what Edward D. Wood Jr. aficionados call "The Kelton Trilogy", a trio of films featuring Paul Marco as whining, reluctant policeman Officer Kelton. The other two films are Die Rache des Würgers (1955) and Plan 9 aus dem Weltall (1957).
Edward D. Wood Jr. finished the principal photography and rough cut of the film by late 1957, but couldn't afford the post-production work. The film laboratory opted to keep the negative footage until the bill could be paid. By the 1980s, film historians either considered this a lost film or suspected that it never existed to begin with. Film archivist Wade Williams managed to locate the film, paid the film lab, and obtained ownership of it.
The character of Dr. Acula also appeared in an unrealized Edward D. Wood Jr. film project of the same name. The role was originally intended for Bela Lugosi.