Gina Lollobrigida

Character: Maria Marcello

Sean Connery

Character: Anthony Richmond

Ralph Richardson

Character: Charles Richmond

Alexander Knox

Character: Detective Inspector Lomer

Johnny Sekka

Character: Thomas

Peter Madden

Character: Yacht Captain

Danny Daniels

Character: Fenton

Laurence Hardy

Character: Baines

Michael Goodliffe

Character: Solicitor

André Morell

Character: Judge

Noel Howlett

Character: Assistant Solicitor

Douglas Wilmer

Character: Dr. Murray

A. J. Brown

Character: Third Executive (uncredited)

Robert Bruce

Character: John (uncredited)

Georgina Cookson

Character: Guest at Villa Salon (uncredited)

Michael Corcoran

Character: The Cook (uncredited)

George Curzon

Character: Second Executive (uncredited)

Gilda Dahlberg

Character: Guest at Villa Salon (uncredited)