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The working titles of the film were Dr. Phibes and The Curse of Dr. Phibes. Although an August 1970 Variety news referred to the film as The Curse of Dr. Pibes, a title that is also cited in some modern sources, "Pibes" was most likely a typographical error. The opening and closing onscreen cast credits differ slightly in order. Throughout the film, "Vulnavia" plays the violin as Phibes murders his victims. Onscreen song titles are prefaced by the following written acknowledgment: "The Producers wish to thank The Big Three Music Co. for permission to use the following songs."
Although a September 1970 Variety news item noted that Albert Fennell was to produce the film with Ron Dunas, the extent of Fennell's contribution, if any, has not been determined. An October 1970 Hollywood Reporter news item stated that Peter Cushing was originally to co-star with Vincent Price. The 1972 film Dr. Phibes Rises Again, directed by Robert Fuerst and starring Price and Peter Jeffrey, was a sequel to The Abominable Dr. Phibes (see below).