Gina Lollobrigida

Maria Marcello

Sean Connery

Anthony Richmond

Ralph Richardson

Charles Richmond

Alexander Knox

Detective Inspector Lomer

Johnny Sekka

Thomas

Peter Madden

Yacht Captain

Danny Daniels

Fenton

Laurence Hardy

Baines

Michael Goodliffe

Solicitor

André Morell

Judge

Noel Howlett

Assistant Solicitor

Douglas Wilmer

Dr. Murray

A. J. Brown

Third Executive (uncredited)

Robert Bruce

John (uncredited)

Georgina Cookson

Guest at Villa Salon (uncredited)

Michael Corcoran

The Cook (uncredited)

George Curzon

Second Executive (uncredited)

Gilda Dahlberg

Guest at Villa Salon (uncredited)