该片是由赛尔乔·马蒂诺执导的恐怖片,于1973年上映，主要讲述了:In Perugia,. a serial-killer is stra.ngling colle.ge stu.den.ts. Inspector Martino is in. charge of t.he inv.estiga.tion and .has. a black and red scar.f a.s t.he only lead to be followed.. He asks. th.e scarf street ven.dor Gianni Tomasso if he. recalls who. might. ha.ve bought the scarf, but th.e man tells .that h.e cann.ot rememb.er.. Then Gianni blackmai.ls .the. killer and becomes his nex.t victim.. Me.anwhile the colleg.e students and girlfrien.ds Jane, Dan.iela, .Kat.ia and Ursula travel to an .isolated vil.la to .spend .a couple .of .days together during .a b.rea.k from the art history clas.ses of th.eir. professor Franz t.hat has befriended Jane.. When Jane t.wists .her. ankle, Dr. Roberto is summ.oned and ask.s her .to res.t. The st.ude.nt Stefano Vanzi stal.ks .Dan.iela since he is obsessed f.or her. A.re .the girls in dange.r in the villa? Who migh.t be the kil.ler?