Adventures into the Unknown #16

This anthology issue features multiple supernatural tales. The first story involves Markabian spies from the future who travel 12,000 years back in time to Earth, where they are captured and forced to reveal their alien language before facing execution by their queen. Another story depicts a wizard with split personality disorder who summons a demon, ultimately being driven to madness as his two personas battle for control. "Spirit of Frankenstein" tells of atomic scientists who create a robot linked to a man's mind, and when miners become trapped in a cave-in at Copper Mountain, Dr. Dan Warren awaits news while the robot receives doses of a chemical called creatine to enhance its abilities for a rescue mission.