Mystery Men Comics #6

In "The Green Mask and the Taj Lamah Jewels!" from Mystery Men Comics #6 (1940), the Green Mask races against time to thwart a shadowy enemy plot targeting American industry and the nation’s gold reserves—before the sabotage cripples the country’s war effort. With only nine pages to unravel the conspiracy, the masked hero must outwit spies and sabotage before the tide of war turns.

In the remote reaches of Asia, a mysterious meteor has left behind a growing wasteland known as "The Bald Spot," a place where nature refuses to thrive. When strange, jellyfish-like creatures—protoplasmen—begin emerging from the barren ground, Rex is called in to investigate. As the threat spreads, he must uncover the secret behind these alien life forms before they consume the world.

Billy Bounce, the kid detective, spots a man with a package heading for the river after hearing a radio bulletin about a stolen $10,000, and decides to tail him with his trusty diving helmet in tow. When Billy recovers what he thinks is the loot from under the dock, he discovers the package contains something far different than expected—and his mix-up lands him in hot water with the law.

In "null," Wing takes to the skies over the storm-lashed North Atlantic, tasked with spotting U-boat periscopes amid the war-torn waters. When he locates a target and guides a torpedo strike, the resulting explosion sends shrapnel tearing through his plane’s rudder—sending him plunging into the sea, now at the mercy of enemy forces.