Police Comics #21 (1943)

In "Phantom Lady vs. the Spider Widow," the two masked vigilantes are drawn into a deadly game when each receives a challenge from the other—Phantom Lady demanding a showdown to prove who's the superior crime fighter, and Spider Widow insisting the Raven remain in her custody. Unbeknownst to them, a criminal gang is manipulating the feud, hoping to eliminate one heroine by pitting her against the other.

In a madcap 1943 adventure, the eccentric inventor Prof. Snap Gadget demonstrates his revolutionary explosive to the U.S. Navy—only to accidentally sink a battleship into the center of the Earth. Trapped inside the upside-down world beneath the planet's surface, he and a stranded sailor must navigate gravity-defying landscapes and a surreal underground realm, all while a surprise hero named Flatfoot Burns arrives to help them escape.

Jo, a young boy with unexpectedly sharp hearing, accidentally overhears a secret Nazi plan to destroy the world—complete with a list of targets from Alaska to the North Pole—while trying to listen to a distant conversation. His super-sensitive ears pick up every detail, from bombing cities to sinking ships, until he’s startled by a mundane family question from his mother, cutting through the espionage like a tiny, familiar voice.

In a Parisian-inspired crime spree, a gang of Apaches targets wealthy industrialist Richard Dayton, kidnapping him under the cover of a staged robbery. As the criminals vanish into the city’s sewers, a mysterious vigilante known as Destiny senses the crime and races to intervene, uncovering their hidden escape route and confronting the gang in a tense showdown beneath the streets.