Barbara Steele
Helen Karnstein / Mary Karnstein
George Ardisson
Baron Kurt Hummel
Halina Zalewska
Elizabeth Hummel / Adele Karnstein
Umberto Raho
Von Klage
Laura Nucci
Grumalda
Giuliano Raffaelli
Count Humboldt
Nello Pazzafini
Monk
J
Jeffrey Darcey
The Messenger
Aldo Barozzi
Plague Victim (uncredited)
M
Mario Casella
Gorca (uncredited)
S
Severino D'Ottavi
Party Guest (uncredited)
Alba Maiolini
Wife of Plague Victim (uncredited)
Aldo Massasso
The Priest (uncredited)
Enzo Mondino
Villager at the Execution (uncredited)
P
Piero Pastore
Baron Von Letz (uncredited)
Sylvia Sorrente
Gorca's Wife (uncredited)
T
Terry Velasco
Gorca's Daughter (uncredited)