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.
Tarzan
Ula Vale
P.B. Raglan
Maj. Francis Martling
George
Gordon Hamilton
Alice Martling
Lt. d'Arnot
Bouchart [Ch.1]
Ula's Companion at Resort [Ch.1] / Capt. Simon Blade [Ch.11]
Queen Maya
Expatriate Scientist
