Torso (original title: I corpi presentano tracce di violenza carnale) (Italian: "Bodies bear traces of carnal violence") is an Italian giallo thriller directed by Sergio Martino. The film was shot on location in Perugia and the Italian countryside in early 1972, and was subsequently released in 1973.
The murder of two college students (and one's boyfriend) leads to a
manhunt for the killer, whose chief weapon is a red and black ascot to
strangle his victims. When a young college student discovers that she
recognizes the murder weapon, she becomes a target of the killer and
agrees with one of her friends, who is friends with their art history
teacher, to stay at a local villa located on a nearby cliff.
However, the isolated cliffside villa offers no protection for the
killer, who runs over the street vendor who he buys his scarves from and
who tried to blackmail him for his silence. At the same time, a young
college student who is obsessed with one of the four girls and has been
actively stalking her (and wearing a similar red and black scarf) and
one of the locals in town, go up to the villa to spy on the girls only
to be ruthlessly killed. The young student who invited her friend to the
villa breaks her ankle and a doctor gives her a sedative; as such, she
is asleep when the killer makes his way into the house and kills the
girls, including the one who can identify him. She wakes up in time to
watch him dismember the bodies but hides to avoid detection. However,
the killer locks the house, trapping her inside while he prepares to
dispose of the body. When he realizes that the last girl is alive, he
baits her into coming out of the room she is hiding in and reveals
himself to her.