The Jigsaw Jeopardy

With his hideout in a jigsaw puzzle factory, the Riddler captures Robin, and ties him down "spread-eagle" on a giant jigsaw, with its blade poised to DIVIDE UP the Boy Wonder! Batman, meanwhile, walks into an acid-bath trap, and later has to tackle an EGG-splosive peril. Includes Batgirl (who disguises herself as Robin!)

Some voices:
Batman: Olan Soulé
Robin: Casey Kasem
Batgirl: Jane Webb
Narrator & Riddler: Ted Knight (2 years BEFORE "Mary Tyler Moore")

TVLand once stated that Olan Soulé voiced Batman on Radio in the 1940's, but this is in dispute. TVLand has been known to make mistakes. We do know that Filmation's voice of Superman in their 1966 cartoons, Bud Collyer, DID voice Superman on Radio in the 40's.