George Peppard
Reno Davis
Inger Stevens
Anne de Villemont
Orson Welles
Leschenhaut
Perrette Pradier
Jeanne-Marie
Keith Michell
Morillon
Geneviève Cluny
Veronique
Maxine Audley
Mathilde Rosier
Ralph Michael
Claude de Gonde
Barnaby Shaw
Paul
Jacques Roux
Maguy
Patience Collier
Goonelle
Ave Ninchi
Signora Orragi
Renzo Palmer
Monk
Francesco Mulè
Policeman at Trevi Fountain
Rosemary Dexter
Daniela
Raoul Delfosse
Louis Le Buc
Jean Louis
Driot
Calisto Calisti
Police Inspector at Rome Station (uncredited)
William Job
Bourdon
Peter Bayliss
Edmond Rosier
James Mishler
Jesse Hardee
Jean Hébey
Man in charge of sleeping cars
Jacques Stany
Georges - the family chauffeur
Paule Albert
Sophie
Andrea Esterhazy
de Villemont Party Guest (uncredited)
