Challengers of the Unknown #9

Synopsis

When a villain named Dekkar uses a machine to steal the Challengers' memories, June Robbins must show her amnesiac friends how to defeat their foe. Goading them, she makes them recall their mountain climbing, diving, and other skills. Feigning amnesia, the Challengers get into the villains' castle to fight. June inserts the memory disk into the machine, hits reverse, and restores the guys' memories.