This film is a highly entertaining psychological thriller in which Carol Baker plays a wealthy American widow who escapes all this in a secluded Italian villa. Playing tricks on his lucky playboy, Lu Castel, and his clever trendsetter seduction skills have some gold rush motivations behind them. He doesn't hesitate to get what he wants. "He encouraged Beck's early alcoholism and suspicious self-esteem, introduced what he called his" sister, "and helped Beck fall further into the labyrinth of pathological psychological games, drug addiction, and collective behavior, all of which ultimately led to a near crazy and self-destructive decline.". I won't reveal it any more. It can be said that this film exhibits the characteristics of its volatile 1960s, Europe's squalid atmosphere, and psychological suspense thriller. Director Umberto Renzi's work is at best uneven, and he's just making a mountain out of a molehill. However, he made some pretty good Jallow and crime movies in the 1960s and 1970s, and this is one of them (Renzi's other good movies - "SPASMO," "Seven Bloody Orcs," "Assassination of Lethal Weapons," and so on). Unfortunately, this film is often confused with another good but not very good Renzi film, which was briefly released in the United States under the same PARANOIA title (but more widely known, especially in the video, known as "The Quiet Land of Killing").