This film is an extremely entertaining psychological thriller with Carrol Baker excellent as a rich American widow getting away from it all at a secluded Italian villa. Enter smart aleck down on his luck playboy, Lou Castel, who has some golddigging motives behind his slick hipster seduction techniques and has no qualms about how he gets what he wants. He encourages Baker's character's incipient alcoholism and dubious self-esteem, brings in his supposed 'sister' to help drag Baker even further into a maze of sick mind games, drug addiction and group sex, all culminating in a descent into near-madness and self-destructive depravity. I won't give away anymore, suffice to say that the film delivers on its swinging sixties, Euro sleaze ambience and psychological suspense thriller credentials in spades. Director Umberto Lenzi's work has been, at best, uneven and he's churned out his share of crap. However, he made some quite good giallos and crime pictures in the sixties and seventies and this is one of them (other good films by Lenzi -- SPASMO, SEVEN BLOODSTAINED ORCHIDS, ASSAULT WITH A DEADLY WEAPON, to name only a few). Unfortunately this film is ofen confused with another okay but not-quite-as-good Lenzi film that was also released briefly here in America under the same PARANOIA title (but is more commonly known, especially on video, as A QUIET PLACE TO KILL).
如何评价《偏执狂》
优酷网友热评：慕名去看，画面很精致，演技也在线，台词意味深长，编剧非常用力，最终呈现出来的是一支华丽的舞蹈。
来自网易云网友的评价：导演以自身的传统美学功底，对电影的写实艺术特性也有精深的理解和把握，他特别擅以生动的细节描绘人物的内心活动，并调动电影的各种艺术元素为塑造人物服务。
导演是电影的灵魂和核心，他们的执导能力直接影响到电影的质量。优秀的导演能够准确把握故事的节奏和情感表达，通过镜头语言和艺术手法将故事完整呈现给观众。他们的独特视角和风格也是评价电影好坏的重要标准之一。
作为一门艺术，不仅要有优秀的故事和表演，还需要具备出色的技术表现。摄影、音效、音乐和特效等方面的表现都能够提升电影的观赏价值。技术的精湛与细腻能够帮助电影更好地传达情感和故事，增强观众的观影体验。
