Cover: Bob Brown

Challengers of the Unknown #23

Dec 1961 · DC · 0.12 USD

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In "Death Guarded the Doom Box," the Challengers of the Unknown race to recover the legendary Doom Box before it falls into the wrong hands, tracking Burt Langdon into a treacherous valley filled with bizarre traps—ranging from a tree that functions as an elevator to a battalion of giant robot Romans. As they confront a two-headed dragon and a wall of flames guarding the artifact, the team discovers the horn's true purpose: it was designed to destroy the box if it’s ever removed from its ring of fire. Written by Arnold Drake and illustrated by Bob Brown, this 1961 DC adventure blends classic sci-fi mystery with pulpy peril, all rendered in bold, dynamic art. The cover, also by Bob Brown, captures the moment of explosive tension.

Contains 4 stories

Death Guarded the Doom Box

11.67 pp · Adventure, Superhero

Challengers of the Unknown [Ace MorganRocky DavisProf HaleyRed Ryan]Burt LangdonLangdon's gang

In "Death Guarded the Doom Box," the Challengers of the Unknown race to stop Burt Langdon from claiming the fabled Doom Box, a weapon hidden in a treacherous valley. Trapped by deadly traps—ravenous alligators, a tree that lifts like an elevator, and mechanical Roman warriors—the team must push through before Langdon’s gang makes off with the box, only to face a guardian of fire and a two-headed dragon.

Amoeba, Robot, Fossil

0.5 pp · Non-Fiction

The Island in the Sky

12.67 pp · Adventure, Superhero

Challengers of the Unknown [Ace MorganRocky DavisProf HaleyRed Ryan]June RobbinsDr. Kue (alien scientist)Greeg (alien scientist)Zog (alien criminal)Zog's gang (alien criminals)

In "The Island in the Sky," the Challengers of the Unknown are summoned by June when strange objects begin vanishing from a rooftop restaurant. When the team investigates, they uncover a hidden cloud concealing a flying platform and a band of alien criminals, all while battling a colossal metal insect and confronting a truth far stranger than they expected.

Untitled Humor story

0.67 pp · Humor, Science Fiction

Doctor Rocket