What happens
Lamont Cranston, a wealthy man who secretly fights crime as the Shadow, travels aboard the steamship Amazon. Among the passengers, a young man named Randy becomes frightened after receiving a radiogram, and his stepmother, Margot, and others around him grow uneasy. Tensions rise as a secret cargo of munitions is discussed for an overseas revolution. The series is The Shadow, and this episode is part of The Mercury Theatre on the Air, first broadcast on July 17, 1938.
The luxury steamship Amazon on a pleasure cruise near a Caribbean coast
Characters: Lamont Cranston, Margot, Randy, Captain McKeon, Dr. Sillard
Listen for: A radiogram that alarms Randy and the secret munitions cargo hidden aboard the ship
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.