What happens
Cranston, the wealthy man known as the Shadow, is called to a Navy meeting about the Graveyard of the Pacific, a region where more than fifteen ships have vanished. Accompanied by Margo Lane, he travels aboard a Navy cruiser to the South Pacific, unseen by the others. Ashore, the Shadow and Margo come upon a strange volcanic island where a figure claiming magical powers holds captives. The Shadow works to uncover what is happening on the island and how the vanished ships are connected to it. This episode is a 1938 broadcast of The Mercury Theatre on the Air, first aired on July 10, 1938.
The South Pacific, a Navy cruiser, and a volcanic island with a crater
Characters: Cranston, Margo Lane, Rudolph Hoyt, Lloyd Collin, Miss Hoyt
Listen for: The Shadow's arrival on the volcanic island and the discovery of the wires inside the crater
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.