aka Tarzan, the Hunted.
"Boy speak English. Boy English."
Two men (Charles Korvin & Patric Knowles) visit Tarzan (Lex Barker), one masquerading as Tarzan's cousin. They are not there on a family visit, but are after diamonds, and convince Jane (Dorothy Hart) that they need to get control of those diamonds for the good of England.
Another solid jungle adventure.