Storyline
A tribe of Neanderthals under the influence of a glowing red comet develop super intelligence and eventually teleport themselves to another dimension. Anthropologist Paul Dover discovers their ancient dwelling place and is present when Ogar teleports back to Earth. Paul must defeat Ogar and stop the invasion.
Story Notes
Cover story. Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics.