What happens
Robin, Dick Grayson, hides aboard a yacht after being spotted by Marsh, his grandfather's secretary, who believes he has shot the boy. Marsh and Captain Skinner plot to poison the elderly Mr. Grayson for his millions. Dick reveals himself to his grandfather, warns him of the plot, and they try to hide while Batman approaches. Marsh and Skinner capture Dick and throw him overboard, and Batman, aboard his craft, dives toward the yacht as its guns fire on him. The series is The Adventures of Superman, first aired October 10, 1946.
A yacht sailing from Cold Harbor, with Batman pursuing it from the sea in Metropolis waters.
Characters: Robin, Dick Grayson, Batman, Marsh, Captain Skinner, Mr. Grayson, Alfred
Listen for: Marsh and Skinner's plot to poison Mr. Grayson, and Dick's capture and overboard escape.
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.