Tarzan and the Fires of Tohr was the second serial produced by Burroughs. Due to delays the show only played on ten stations, including Hawaii, Canada and Australia. The 39 episodes originally aired during 1936. Here is the original synopsis:
"While investigating the illegal activities of slave traders and ivory smugglers, Tarzan and his friend, Paul D'Arnot save a member of the Burton-Ashleigh Expedition from death. After learning that the expedition is lost, Tarzan agrees to lead the group out of the jungle. Little do they realize however, that they will soon be captured by a strange yellow race, and taken to the lost city of Tohr... There they face the dangers of the arena, rogue elephants and sacrifice to the Fires of Tohr - the result of a hidden lake of volcanic fire that shoots up through a pit to the very arms of the temple god, an idol carved in the likeness of a lion.
Befriending the son of the ruler of a rival city who is held as a slave in Tohr, Tarzan and his friends face death at every turn. Love, hate, jealousy, and political intrigue - as well as courage and loyalty - all play parts in this thrilling serial produced under the personal direction of Edgar Rice Burroughs."