What happens
Superman has been lured into a Metropolis apartment building and rendered helpless by kryptonite, and Batman and Robin come to look for him. Finding the apartment empty, they follow an ambulance, driven by a man who calls himself Tony, up the mountain road. Their truck breaks down partway up the slope, leaving them stranded as the ambulance disappears toward the top of Mount George. The episode is part of the 1946 radio serial The Adventures of Superman, and this installment first aired on January 4, 1946 on the Mutual Broadcasting System.
Metropolis, an apartment building, and the mountain road up Mount George
Characters: Batman, Robin, Superman, Mr. Jones, Professor Noshima, Tara, Tony
Listen for: Batman and Robin stranded in the broken-down truck as the ambulance vanishes up Mount George
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.