Bat-Supe! #81: “The Secret Letter” Part 7

With the aid of Sergeant O’Neil of the Metropolis Police Force, Superman and Batman are close to finding the men who have the letter containing Superman’s secret identity, but even if they find them, how will they get the letter back? It’s a hair-raising finale to our story, chums, so get ready! Plus, in today’s Important Message, be sure to join the Bat-Supers so you can get our new Membership Kit, because the next Swell Prize might depend on it!

Part 7 of “The Secret Letter” was originally broadcast on December 3, 1946!