Director: Wilhelm Thiele
A letter from Jane, who is nursing British troops, asks Tarzan's help in obtaining a malaria serum extractable from jungle plants. Tarzan and Boy set out across the desert looking for the plants. Along the way they befriend a stranded American lady magician.
Johnny Weissmüller
Tarzan
Nancy Kelly
Connie Bryce
Johnny Sheffield
Boy
Otto Kruger
Paul Hendrix
Joe Sawyer
Karl Straeder
Lloyd Corrigan
Sheik Abdul El Khim
Robert Lowery
Prince Selim
Frank Puglia
Magistrate
Philip Van Zandt
Kushmet
Johnny Weissmüller
Tarzan
Nancy Kelly
Connie Bryce
Johnny Sheffield
Boy
Otto Kruger
Paul Hendrix
Joe Sawyer
Karl Straeder
Lloyd Corrigan
Sheik Abdul El Khim
Robert Lowery
Prince Selim
Frank Puglia
Magistrate
Philip Van Zandt
Kushmet
Johnny Weissmüller
Tarzan
Nancy Kelly
Connie Bryce
Johnny Sheffield
Boy
Otto Kruger
Paul Hendrix
Joe Sawyer
Karl Straeder
Lloyd Corrigan
Sheik Abdul El Khim
Robert Lowery
Prince Selim
Frank Puglia
Magistrate
Philip Van Zandt
Kushmet