Francesco Improta is an honest fruit and vegetable peddler who lives with his elderly mother Assunta and daughter Fiorella. His wife Lucia left home two years earlier, as, in order to help the family, she did not hesitate to give herself to the boss Peppino Ascalone, with whom she is now forced to live together.

A group of strangers are summoned to the secluded home of Patrick, a young man rendered comatose after a freak accident, but soon find themselves falling victim to Patrick's mysterious psychic powers and murderous rage.

Franco Sereni, a captain of carabiniers, is dismissed from service for being the proponent of "the law of the gun". He is asked to hold a private investigation of several cases of blackmailing wealthy women. Soon Sereni finds out that there is much more then just blackmailing.

When a trio of free-spirited young women insists on spending the night in a castle rumored to be owned by the Devil himself, their cobweb-and-candelabra lark triggers a nightmare of lust, violence, vampirism, and Satanic seduction.

Johnny fights the banker Burton, who tries to acquire with the help of the strange bandit Martinez, in an unlawful way, all the gold mines in the nearer environment.

Eurocrime/Poliziotteschi movie from 1968