A practical joke by Lois exposes Clark’s secret identity, forcing him to “masquerade” as Superman. A German inventor creates an army of Nazi-controlled sea serpents that Hitler plans on using against Allied convoys.

1. "Superman's Secret Revealed"
2. "Destroyers From the Depths" (Superman vs Adolf Hitler, with Lois)
3. "Lair of the Leopard" (Superman vs The Leopard, with Lois and Perry)
4. Chesty McGurk [gag strip]
5. "The Prof Comes Through" [text story]
6. "Not In the Cards" (Superman vs the Puzzler)