The jungle king's cousin tries to get him to help find a diamond treasure.
| Actor | Role |
|---|---|
 Lex BarkerTarzan | Tarzan |
 Dorothy HartJane | Jane |
 Patric KnowlesEdwards | Edwards |
 Charles KorvinRokov | Rokov |
 Tommy CarltonJoseph 'Joey' Martin | Joseph 'Joey' Martin |
| WWesley BlyNative Capture (uncredited) | Native Capture (uncredited) |
 Darby JonesWitch Doctor (uncredited) | Witch Doctor (uncredited) |
 Peter MamakosPilot (uncredited) | Pilot (uncredited) |
 Bill WalkerNative Chief (uncredited) | Native Chief (uncredited) |