Tarzan heads to Guatemala to look for his friend, D'Arnot and helps Major Matling search Mayan ruins for hidden jewels and an idol holding the formula for an explosive. Guatemalan police pursue Alice and Gordon assuming them as spies. Ula Vale as a mysterious figure is revealed in the final episode to be an undercover government operative.
Chapter 7:
While Martling locates Raglan, fever-stricken in native settlement. Tarzan, hearing distant screams from George, hastens toward him but finds a panther bloking his path...