 | Gualtiero Jacopetti als Himself |
 | Franco Prosperi als Himself |
 | Dick Gregory als Himself |
| Cicely Browne als Aristocrat (voice) |
 | Geoffrey Copleston als Prof. Thomas R. Dew (voice) |
| Gualtiero Jacopetti | Director |
| Gualtiero Jacopetti | Writer |
| Claudio Cirillo | Cinematography |
| Antonio Climati | Cinematography |
| Gualtiero Jacopetti | Producer |
| Riz Ortolani | Original Music Composer |
| Benito Frattari | Cinematography |
| Gualtiero Jacopetti | Editor |
| Franco Prosperi | Writer |
| Franco Prosperi | Director |
| Franco Prosperi | Producer |
| Franco Prosperi | Editor |
