 | Elvis Presley als Mike Windgren |
 | Ursula Andress als Marguerita Dauphin |
 | Elsa Cárdenas als Dolores Gomez |
 | Paul Lukas als Maximillian Dauphin |
 | Larry Domasin als Raoul Almeido |
 | Alejandro Rey als Moreno |
 | Robert Carricart als Jose Garcia |
 | Teri Hope als Janie Harkins |
 | Teri Garr als Hotel Guest (uncredited) |
 | Charles Evans als Mr. Harkins (uncredited) |
 | Howard McNear als Dr. Stevers (uncredited) |
 | Mary Treen als Mrs. Stevers (uncredited) |
 | Red West als Poolside Guest (uncredited) |
| Richard Thorpe | Director |
| Allan Weiss | Screenplay |
| Joseph J. Lilley | Original Music Composer |
| Hal B. Wallis | Producer |
| Joseph H. Hazen | Executive Producer |
| Paul Nathan | Associate Producer |
| Daniel L. Fapp | Director of Photography |
| Robert R. Benton | Set Decoration |
| Walter H. Tyler | Art Direction |
| Stanley E. Johnson | Editor |
| Hal Pereira | Art Direction |
| Sam Comer | Set Decoration |
| Edith Head | Costume Design |
| Nellie Manley | Hair Supervisor |
| Wally Westmore | Makeup Supervisor |
| Michael D. Moore | Assistant Director |
| Charles Grenzbach | Sound Recordist |
| Hugo Grenzbach | Sound Recordist |
| Tom Parker | Technical Advisor |
