Like several other Spanish horror films of the period made under the Francisco Franco regime, this film was shot with different versions in mind for both the domestic and international markets. Nude scenes featuring the entire main female cast were replaced with either clothed or semi-nude scenes made for Spain, which means that different versions of it have been released over the years on home video. An unedited version of it did not turn up on U.S. VHS until Sinister Cinema found a U.S. print that was more complete than the tame version that had been previously released by Gorgon Video, and this unedited version was later released in a (terrible-looking) DVD version from Eclectic.
Re-released in the late 1970s under a new title, "Cemetery Girls," on a double feature with Brides of Blood (1968), then re-titled "Grave Desires".
The 2016 Vinegar Syndrome DVD/Blu-ray combo release of the complete and unedited version of the film included an insert booklet with liner notes by longtime Paul Naschy enthusiast Mirek Lipinski of Latarnia who offered several details about the film, including a tantalizing mention of some perverse footage (up to 15 min.) that was removed from the final cut.
The period from 1972-1973 was an incredibly busy time for Spain's most famous horror film star, Paul Naschy, who had made his mark on the world with a series of films about the tragic werewolf Count Waldemar Daninsky. By this point in his career, Naschy was branching out into other characters, including some quasi-gialli, but this was the period where he really went for it, with numerous film titles like El jorobado de la Morgue (1973), El retorno de Walpurgis (1973), El espanto surge de la tumba (1973), and La rebelión de las muertas (1973). One of the crown jewels from this period - and of Naschy's career in general - was El gran amor del conde Drácula (1973), which finally gave him the chance to tackle the world's most famous vampire with a lovelorn twist.
In an interview, Mirta Miller [xxxx] said she had fun getting to play a sexy monster, despite being cold while wandering around in lingerie most of the time.