What happens
Clark Kent meets Batman outside the River of Horrors at Playland, an amusement park outside Metropolis. Jimmy Olsen and Dick Grayson, who is Robin, have phoned them for help after Lois Lane vanished from their boat in the dark tunnel. Clark and Batman question a policeman, Officer Riley, who tells them what the boys reported. They search the tunnel and find a hidden passage that leads behind the Hall of Mirrors. Clark and Batman then spot a heavy-set old man with white hair and dark glasses, whom the boys had described, and they follow him into the Hall of Mirrors. This is part four of the serial The Adventures of Superman, broadcast on September 10, 1945.
Playland, an amusement park outside Metropolis, including the River of Horrors tunnel and the Hall of Mirrors
Characters: Clark Kent, Batman, Lois Lane, Jimmy Olsen, Dick Grayson, Robin, Officer Riley, Dr. Bly
Listen for: Officer Riley's account of the boys' story, and the moment Clark and Batman spot the white-haired man entering the Hall of Mirrors
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.