A serial in 12 chapters. Tarzan goes to Guatemala to find his lost friend, D'Arnot. On the way he helps Major Matling search Mayan ruins for hidden jewels and an idol containing the formula for a powerful explosive. D'Arnot and the idol are rescued, but the idol falls into the clutches of the explorer Raglan.
as Tarzan
as Ula Vale
as P.B. Raglan
as Maj. Francis Martling
as George
as Gordon Hamilton
as Alice Martling
as Lt. d'Arnot
as Bouchart [Ch.1]
as Ula's Companion at Resort [Ch.1] / Capt. Simon Blade [Ch.11]
as Queen Maya
as Expatriate Scientist
