Suzy Kendall

Jane

Tina Aumont

Daniela Anselmi

Luc Merenda

Roberto

John Richardson

Prof. Franz

Roberto Bisacco

Stefano Vanzi

Ernesto Colli

Gianni Tomasso, the Scarf Vendor

Angela Covello

Katia

Carla Brait

Ursula

Conchita Airoldi

Carol Peterson

Patrizia Adiutori

Florence Heineken

Luciano Bartoli

Motorcycle Guy #1

Carlo Alighiero

Uncle Nino

Vincenzo Crocitti

Delivery Man

Fausto Di Bella

John, Flo's Boyfriend

Giuseppe Terranova

Car Repairman

Rosaria della Femmina

Prostitute

Ermelinda De Felice

Woman in Car with Roberto

Dolores Calò

Woman with Green Dress at University Exit (uncredited)

Renato Cestiè

Gianni Tomasso (child) (uncredited)

Vera Drudi

Stefano's Landlady (uncredited)

Giuseppe Marrocco

Policeman at Crime Scene (uncredited)

Barbara Marzano

Hippie Dancer (uncredited)

Alberto Sorrentino

Witness at Crime Scene (uncredited)