Peter McDermott
Rod Taylor
Jeanne Rochefort
Catherine Spaak
Bailey
Roy Roberts
Herbie Chandler
Al Checco
Mrs. Grandin
Sheila Bromley
Sam
Harry Hickox
Mason
William Lanteau
Joe Laswell
Ken Lynch
Lawrence Morgan
Clinton Sundberg
Kilbrick
Tol Avery
Dr. Elmo Adams
Davis Roberts
Bellhop
George Boyce
Keycase Milne
Karl Malden
Vickery
Charles Alvin Bell
Henry
Robert Goodwin
Elliott (uncredited)
Jack Donner
Cy - Elevator Operator (uncredited)
Lester Dorr
Tousaint (uncredited)
Vince Howard
Housekeeper (uncredited)
Dorothy Konrad
Daughter (uncredited)
Judy Norton
Giotti (uncredited)
John Sebastian
Young Desk Clerk (uncredited)
William Swan
Hotel Patron (uncredited)
Arthur Tovey
Warren Trent
Melvyn Douglas
The Duchess Caroline
Merle Oberon
Detective Dupere
Richard Conte
Geoffrey - Duke of Lanbourne
Michael Rennie
Curtis O'Keefe
Kevin McCarthy
Christine
Carmen McRae
Capt. Yolles
Alfred Ryder
Costume Design
Edith Head
Director
Richard Quine
Makeup Supervisor
Gordon Bau
Hair Supervisor
Jean Burt Reilly
Unit Manager
Carter DeHaven Jr.
Assistant Director
Mickey McCardle
Sound Mixer
M.A. Merrick
Assistant Camera
Richard Doran
Electrician
Michael A. Jones
Novel
Arthur Hailey
Adaptation
Wendell Mayes
Producer
Original Music Composer
Johnny Keating
Director of Photography
Charles Lang
Editor
Sam O'Steen
Art Direction
Cary Odell
Set Decoration
George James Hopkins
Howard Shoup