Directed by
| John Rich | ||
Writing Credits (in alphabetical order)
| Stirling Silliphant | ... | (written by) |
Cast (in credits order)
| Ray Milland | ... | Roy Markham | |
| Ray Stricklyn | ... | David Markham | |
| Harvey Stephens | ... | Andre Valcour | |
| Dick Kallman | ... | Martin Valcour | |
 |
Stan Young | ... | Leonard |
Produced by
| Warren Duff | ... | producer |
| Joseph Sistrom | ... | producer |
Music by
| Juan García Esquivel | ... | (as Esquivel) |
Cinematography by
| Neal Beckner | ||
Editing by
| Stanley Rabjohn | ... | (as Stan Rabjohn) |
Art Direction by
| Loyd S. Papez | ||
Set Decoration by
| William P. Tapp | ... | (as William Tapp) |
Makeup Department
| Jack Barron | ... | makeup artist |
| Florence Bush | ... | hair stylist |
Second Unit Director or Assistant Director
| Carter De Haven Jr. | ... | assistant director (as Carter De Haven III) |
Sound Department
| Stephen Bass | ... | sound (as Stephen J. Bass) |
Costume and Wardrobe Department
| Vincent Dee | ... | costume supervisor |
Editorial Department
| Richard G. Wray | ... | editorial supervisor |
Music Department
| Stanley Wilson | ... | music supervisor |