该片是由翁贝托·伦齐执导的剧情片,于1969年上映，主要讲述了.:This film is a.n extremely ent.ert.aining. psychological thriller wit.h C.arrol Baker excellent as. a .rich American widow getting. away from i.t all .at a secl.uded Italian villa. Enter s.mart aleck down on his luck. playboy, Lou C.astel, who has .some golddiggin.g moti.ves behind his .slick hipster s.edu.ction .techniques and has no qualm.s a.bout how he gets what he. wa.nts. He encourages Baker's .character's .incipi.ent alcoh.olism and dubious self-este.em, brings in his supposed .'sister' to hel.p drag Baker ev.en further into. a maz.e of sick mind .games, drug add.ict.ion an.d group sex, all culminatin.g i.n a descent into near-ma.dne.ss and self-destructive dep.ravity.　　I w.on't g.ive away .anymore, suffice to say tha.t the film delivers on its .swinging sixtie.s, Euro sleaze .ambience and ps.ycholo.gical suspense .thriller creden.tia.ls in .spades. Director Umberto Le.nzi.'s work has been, at bes.t, .uneven and he's churned out. his share o.f crap.. However., he made some quite good g.iallos and crime pictures i.n the sixties a.nd seventies an.d this is one o.f them. (other good fi.lms by Lenzi --. SP.ASMO, .SEVEN BLOODSTAINED ORCHIDS,. AS.SAULT WITH A DEADLY WEAP.ON,. to name only a few).　　Unfo.rtunately th.is fil.m is ofen. confused with another okay. but not-quite-as-good Lenz.i film that was. also released .briefly here in. Ameri.ca under the sa.me PARANOIA tit.le .(but i.s more commonly known, espe.cia.lly on video, as A QUIET. PL.ACE TO KILL).