Orgasmo esotico (1982)

Marina lives in a small country house with her husband. One night an angry, dark-skinned woman, Sonia and her homosexual friend appear and she kills Marina's husband. She herself is drugged and abused, but due to the drug, she helps the dark-skinned man in a murder of her doctor, and it won't be the last. Marina's husband also appears to have returned from the dead.