What happens
Tarzan, with Dan and Lawson, is held in the Forbidden City of Opar, where Helene Gregory and Magra are prisoners of King Sutan. Queen Tirah has promised the freedom of Tarzan's friends if he brings her the Father of Diamonds from the temple casket. Tarzan retrieves the golden disc, fighting off two prehistoric monsters on the way. Later, Tirah tells him she will reign alone and asks for a few days' grace before she reveals the stone. In the same episode, Tom Hopkins, who has been following the others, is seen slipping away with the disc, and the group is trapped in a sealed corridor. This series is Tarzan, and the episode first aired on June 12, 1935.
The Forbidden City of Opar, including the Great Pyramidal Temple of Ma'achu and its ceremonial hall, the queen's chambers, and secret passages beneath the city.
Characters: Tarzan, Dan, Lawson, Helene Gregory, Magra, King Sutan, Queen Tirah, Tom
Listen for: Tarzan's rope work against the two monsters in the ceremonial hall, and the trap closing around the three men in the corridor at the end.
Written from the episode itself; it never gives away the ending. Every recording is remastered for the stream: cleaned of rumble, hiss and mains hum (and the old TV whine where we found it), then levelled in two passes to steady broadcast loudness, so one show is never quieter than the next.