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