What happens
Superman, Batman and Robin confront a mysterious bank robber impersonating Superman, who has been planning a fifty million dollar burglary from the vaults of the Metropolis Banknote Company. In the basement vault, the three heroes wait as the robber and his men break through the floor from an old sewer tunnel. The heroes capture the gang, and the robber is revealed to be Boris, a large Russian man who has been used by a man named Simpson. The broadcast is part of the Adventures of Superman radio series, originally aired on February 14, 1946.
Metropolis, including the banknote company vaults, an underground sewer tunnel, and the courtroom and city room of the Daily Planet.
Characters: Superman, Batman, Robin, Boris, Simpson, Jimmy Olsen
Listen for: Superman's confrontation with the fake Superman in the vault and Boris's explanation of the electronic device that softened the steel.
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.