Credits
Cast
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
William Job
Bourdon
Ave Ninchi
Signora Orragi
Renzo Palmer
Monk
Peter Bayliss
Edmond Rosier
Francesco Mulè
Policeman at Trevi Fountain
Rosemary Dexter
Daniela
Raoul Delfosse
Louis Le Buc
James Mishler
Jesse Hardee
Jean Louis
Driot
Jean Hébey
Man in charge of sleeping cars
Jacques Stany
Georges - the family chauffeur
Paule Albert
Sophie
Calisto Calisti
Police Inspector at Rome Station (uncredited)
Andrea Esterhazy
de Villemont Party Guest (uncredited)
Art
Aurelio Crugnola
Art Direction
Alexander Golitzen
Art Direction
Frank Arrigo
Art Direction
Ferdinando Ruffo
Set Decoration
John McCarthy Jr.
Set Decoration
Camera
Cesare Allione
Camera Operator
Costume & Make-Up
Sheryl Deauville
Assistant Costume Designer
Edith Head
Costume Design
Larry Germain
Hairstylist
Giorgio Sciommer
Hairstylist
Vasco Reggiani
Hairstylist
Bud Westmore
Makeup Artist
Cesare Gambarelli
Makeup Artist
Giuseppe Banchelli
Makeup Artist
Crew
Piero Portalupi
Cinematography
Alberto Pizzi
Cinematography
Directing
John Guillermin
Director
Editing
J. Terry Williams
Editor
Production
John Merrick
Casting
Paola Roli
Casting
Richard Berg
Producer
Sound
Francis Lai
Original Music Composer
Waldon O. Watson
Sound
Kurt Doubrowsky
Sound
Writing
Stanley Ellin
Novel
Irving Ravetch
Screenplay
Harriet Frank Jr.
Screenplay