A shipping disaster in the 19th Century has stranded a man and woman in the wilds of Africa. The lady is pregnant, and gives birth to a son in their tree house. Soon after, a family of apes stumble across the house and in the ensuing panic, both parents are killed. A female ape takes the tiny boy as a replacement for her own dead infant, and raises him as her son. Twenty years later, Captain Phillippe D'Arnot discovers the man who thinks he is an ape. Evidence in the tree house leads him to believe that he is the direct descendant of the Earl of Greystoke, and thus takes it upon himself to return the man to civilization.
| Directing | Hugh Hudson | Director |
| Writing | Robert Towne | Writer |
| Writing | Michael Austin | Writer |
| Production | Stanley S. Canter | Producer |
| Production | Hugh Hudson | Producer |
| Editing | Anne V. Coates | Editor |
| Writing | Edgar Rice Burroughs | Novel |
| Sound | John Scott | Original Music Composer |
| Camera | John Alcott | Director of Photography |
| Art | Stuart Craig | Production Design |
| Sound | Robin Clarke | Music Editor |
| Camera | Kenneth J. Withers | Camera Operator |
| Costume & Make-Up | Paul Engelen | Key Makeup Artist |
| Costume & Make-Up | Joan Hills | Hairstylist |
| Production | Patsy Pollock | Casting |
| Art | Ann Mollo | Set Decoration |
| Art | Norman Dorme | Art Direction |
| Production | Garth Thomas | Associate Producer |
| Costume & Make-Up | Peter Frampton | Makeup Artist |
| Art | Simon Holland | Supervising Art Director |
| Costume & Make-Up | John Mollo | Costume Design |
| Costume & Make-Up | Barry Richardson | Key Hair Stylist |
| Costume & Make-Up | Rick Baker | Makeup Artist |
| Camera | David Watkin | Additional Photography |
