In this Italian and Spanish horror thriller, the doctor (Espartaco Santoni) seems to have everything. He has a yacht and a castle and the money and time to travel to as many vacation resorts as he desires. Not only that, but he has hypnotic psychic powers and can lure any woman he likes back to his home. Perhaps this all bores him because he has taken to killing lovely young women and putting them in the hidden niches in his castle. On the side, he dabbles in Satanism. One young woman, who is the sister of one of his previous victims, appeals to him so much that he makes some mistakes.
~ Clarke Fountain, All Movie Guide