Catriona MacColl

Lucy Boyle

Paolo Malco

Dr. Norman Boyle

Ania Pieroni

Ann, the Babysitter

Giovanni Frezza

Bob Boyle

Silvia Collatina

Mae Freudstein

Dagmar Lassander

Laura Gittleson

Giovanni De Nava

Dr. Freudstein

Carlo De Mejo

Mr. Wheatley

Teresa Rossi Passante

Mary Freudstein

Daniela Doria

First Female Victim

Pino Colizzi

Peterson (voice) (uncredited)

Lucio Fulci

Professor Muller (uncredited)