CASTS
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
Aldo Barozzi
Plague Victim (uncredited)
Alba Maiolini
Wife of Plague Victim (uncredited)
Aldo Massasso
The Priest (uncredited)
The Long Hair of Death aka I lunghi capelli della morte (1964) US trailer
SIMILAR