Character Name : John Harrington

Original Name : Stephen Forsyth

Gender : Male

Character Name : Helen Wood

Original Name : Dagmar Lassander

Gender : Female

Character Name : Mildred Harrington

Original Name : Laura Betti

Gender : Female

Character Name : Inspector Russell (as Jesus Puente)

Original Name : Jesús Puente

Gender : Male

Character Name : Alice Norton

Original Name : Femi Benussi

Gender : Female

Character Name : Louise

Original Name : Antonia Mas

Gender : Female

Character Name : Vences (as Alan Collin)

Original Name : Luciano Pigozzi

Gender : Male

Character Name : Dr. Kalleway (as Gerard Tichy)

Original Name : Gérard Tichy

Gender : Male

Character Name : Betsy Wester (as Veronica Llimera)

Original Name : Verónica Llimerá

Gender : Female

Character Name : John Harrington as a Boy (as Fortunato Pascuale)

Original Name : Pasquale Fortunato

Gender : Male

Character Name : Jimmy Kane (as José Ignacio Abadaz)

Original Name : Ignasi Abadal

Gender : Male

Character Name : Vicky

Original Name : Silvia Lienas

Gender : Male

Character Name : Rosy Miller (as Monserrat Riba)

Original Name : Montserrat Riba Vidal

Gender : Male

Character Name : Sdenka (archive footage) (uncredited)

Original Name : Susy Andersen

Gender : Female

Character Name : Unknown (uncredited)

Original Name : Guido Barlocci

Gender : Male

Character Name : Policeman (uncredited)

Original Name : Bruno Boschetti

Gender : Male

Character Name : Model (uncredited)

Original Name : Elina De Witt

Gender : Male

Character Name : Maria (archive footage) (uncredited)

Original Name : Ρίκα Διαλυνά

Gender : Female

Character Name : Gorca (archive footage)

Original Name : Boris Karloff

Gender : Male

Character Name : Giorgio (archive footage) (uncredited)

Original Name : Glauco Onorato

Gender : Male