Writer: Otto Binder
Artist: Wayne Boring
Superman takes Lois Lane to the Fortress of Solitude to show her around his secret hideaway, showing her the many attractions, she is flattered mostly by the room he devoted to her. Leaving her behind to explore while he attends to other business, Lois pays particular attention to the bottle city of Kandor. When she accidentally knocks it over, she inadvertently frees Zak-Kul, an evil criminal scientist. Zak-Kul uses his Illium-349 to enlarge himself, and then disguises himself as Superman so he can hopefully slip away unnoticed. However, Lois realizes he's an impostor when the real Superman contacts her on his communication device, and he quickly arrives to try and sort the situation out.