Horror Castle or The Virgin of Nuremberg was based on an Italian paperback novel La vergine di Normberga, issue #23 in the KKK series of Italian pulp paperback novels. These novels were part of a trend in Italy of cheap paperback novels that blended Gothic, horror and erotic styles.[2] These titles claimed to based on British authors where the real Italian authors were described as translators.[2] The film's producer, Marco Vicario, was the co-founder of the company G.E.I. who published the KKK paperbacks.[2] Margheriti changed elements of the plot of the story to include a war and surgery subplots.[3] The film also removes some of the more extreme elements of the novel, such as a part where a man severs a woman's nerve before pulling out almost all of the bones from her body
![](https://s2.save4k.ru/pic/Tot064owJC4/mqdefault.jpg)