Sauro Scavolini

A string of murders are committed near the estate of a degenerate author, whose abusive relationship with his wife is further complicated by the arrival of his manipulative niece.

After being double-crossed by his mistress and barely escaping a murder attempt, a hit-man sets out to take his revenge on the woman and the mob boss who put her up to it.

Hired by a Mexican landowner to rescue his daughter from a bandit, a bounty hunter instead joins the crook on a heist to obtain a higher pay-out, leading to a tragic double-cross.

An old professor rents a mysterious old villa, and finds a tape recorded by a previous occupant, detailing her debauched lifestyle and the events leading to her murder.