Mary Brooks' father, who has been studying ancient tribes, falls into the hands of "the people of Zar, god of the Emerald Fingers." Tarzan helps Mary locate her father, rescues everyone from the High Priest of Zar, and takes Mary to his cave.

Buster Crabbe
as Tarzan

Julie Bishop
as Mary Brooks

Edward Woods
as Bob Hall

Philo McCullough
as Jeff Herbert

E. Alyn Warren
as Dr. Brooks

Mischa Auer
as High Priest

Matthew Betz
as Nick

Frank Lackteen
as Abdul

Everett Brown
as Bearer
CinemaSerf
Olympic gold medallist Buster Crabbe does his level best to keep this jungle effort moving along, but somehow even his scantily clad, highly toned physique can't stop it from quickly becoming, frankly, dull! A group of Europeans bearing a letter from the estate of "Lord Greystoke" to the effect that...