Richard Todd

Edward Mercer

Eva Bartok

Adriana Medova

John Gregson

Renzo Uccello

George Coulouris

Chief of Police Spadoni

Margot Grahame

Rosa Melitus

Walter Rilla

Count Boria

John Bailey

Lieutenant Longo

Sid James

Bernardo

Martin Boddey

Gufo

Michael Balfour

Moretto

Sydney Tafler

Boldesca

Miles Malleson

Grespi

Eric Pohlmann

Gostini

David Hurst

Minelli

Raymond Young

Luigi

Ferdy Mayne

Tio

Jill Clifford

Renata

Eileen Way

Woman Detective

Toni Lucarda

Nerva

Janice Kane

Ninetta

Meier Tzelniker

Mayor of Mirave

Betty E. Box

Woman Next to the Factory Tour Guide (Uncredited)

Victor Harrington

Bystander (Uncredited)