Marvel Double Feature #4
"Crisis at the Earth's Core" delivers a high-stakes showdown in Marvel Double Feature #4 (1974), a standout tale written by Stan Lee and brought to life with dynamic art by Jack Kirby, inks by Don Heck, and lettering by Artie Simek. When Captain America rescues a downed pilot and learns A.I.M. is racing to deliver the Cosmic Cube to the Red Skull, he leaps into action using an experimental SHIELD missile, chasing the enemy to a remote island. The cover, a bold collaboration by Jack Kirby and John Romita with inks by Don Heck and Romita, captures the intensity of the moment.
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Cap rescues a pilot whose plane was shot out of the sky, a member of A.I.M., and tells Cap about A.I.M.'s The Cosmic Cube--who's taking it to The Red Skull! Watching via remote camera, Using an "experimental manned missile" from SHIELD, Cap catches up to The Keeper. As they battle, the hypnotized man hits the ejector switch, and the two parachute down to a remote island. Red Skull gains the advantage by telling Cap he was the one who gave the orders that resulted in Bucky's death. Gaining the Cosmic Cube, he wills The Keeper into another dimension. Cap realizes his foe has become invincible!
Plot details indexed by the Grand Comics Database (CC BY-SA).