John Harrington

Stephen Forsyth

Acting

Helen Wood

Dagmar Lassander

Acting

Mildred Harrington

Laura Betti

Acting

Inspector Russell (as Jesus Puente)

Jesús Puente

Acting

Alice Norton

Femi Benussi

Acting

Louise

Antonia Mas

Acting

Vences (as Alan Collin)

Luciano Pigozzi

Acting

Dr. Kalleway (as Gerard Tichy)

Gérard Tichy

Acting

Betsy Wester (as Veronica Llimera)

Verónica Llimerá

Acting

John Harrington as a Boy (as Fortunato Pascuale)

Pasquale Fortunato

Acting

Jimmy Kane (as José Ignacio Abadaz)

Ignasi Abadal

Acting

Vicky

Silvia Lienas

Acting

Rosy Miller (as Monserrat Riba)

Montserrat Riba Vidal

Acting

Sdenka (archive footage) (uncredited)

Susy Andersen

Acting

Unknown (uncredited)

Guido Barlocci

Acting

Policeman (uncredited)

Bruno Boschetti

Acting

Model (uncredited)

Elina De Witt

Acting

Maria (archive footage) (uncredited)

Ρίκα Διαλυνά

Acting

Gorca (archive footage)

Boris Karloff

Acting

Giorgio (archive footage) (uncredited)

Glauco Onorato

Acting