Mystery Men Comics #17

The Blue Beetle takes on the ruthless Muck Gang, a sabotage outfit threatening the harbor, when reporter Joan Mason pursues a dangerous lead and finds herself caught in their crosshairs. Racing to protect her while unmasking the gang's true leader, the armored hero must stop a sinister plot before it claims innocent lives. Fast-paced action and colorful villainy collide as law and justice clash with underworld treachery in this adventure by Charles Nicholas.

Rex Dexter races back to Earth with a dire warning: the Cranians, a two-headed alien race desperate for oxygen, are launching a full invasion to conquer the planet and enslave its people. With the fate of Earth hanging in the balance, Rex must find a way to stop Graymo and his fleet before humanity falls under extraterrestrial rule.

Lt. Drake of U.S. Naval Intelligence discovers foreign agents smuggling spies into America through a mysterious underwater route, and dives into the sea to gather evidence before the Coast Guard moves in. What he finds beneath the surface—an air lock, a tunnel to shore, and a cache of explosives—sets him on a collision course with saboteurs planning to destroy the canal. It's a race against time as Drake fights to stop a dynamite-laden boat from reaching its target.

D-13, secret agent disguised as the skipper of a Navy schooner, arrives at Rio Grande to expose Prussland's fifth column operatives smuggling weapons to foment revolution in Latinia. When D-13 intercepts a coded message revealing plans for an armed uprising, he raids the enemy headquarters at the Red House, then pursues the raider ship carrying the confiscated arms out to sea. With Navy destroyers and aircraft standing by, D-13 fights to stop the conspiracy before it can destabilize the region.