Down These Mean Streets (old Time Radio Detectives)

Holy 80th Anniversary, Batman! The Caped Crusader made his first comic book appearance on March 30, 1939, and we're marking the occasion with a complete serialized adventure of Superman co-starring Batman and Robin, the Boy Wonder. It's "The Mystery of the Dead Voice," a tale with ties to young Robin's origin, and it originally aired on the Mutual Network between September 25 and October 16, 1946.