Before they met on the big screen or even in comics, Superman and Batman first joined forces on radio when the Caped Crusader visited The Adventures of Superman. To celebrate the release of their first cinematic team-up – Batman v Superman – Dawn of Justice, "Down These Mean Streets" presents the world's finest heroes in a serialized radio adventure – "Is There Another Superman?" Clayton Collyer is the Man of Steel, and Matt Crowley is the Dark Knight Detective, with Ronald Liss as Robin, the Boy Wonder. We'll hear Parts 1 – 6, originally aired on Mutual from January 29 to February 5, 1946.