Superman #18/1973

In a tale of masked intrigue and high-stakes deception, Batman uses his guise as the wealthy playboy Bruce Wayne to infiltrate an exclusive club of the super-rich—much to the annoyance of Maria Manning. As the night unfolds with a planned boat trip and dazzling fireworks, the Dark Knight must uncover a criminal among the elite before the spectacle turns deadly.

When Zoran, a gorilla with extraordinary mental abilities, escapes from the hidden city of Gorilla-City, he shatters the long-standing invisibility field that has concealed the metropolis from the world. Superman must confront Solovar, the gorilla leader, while racing to stop Zoran’s dangerous rampage—just as Lois Lane and Morgan Edge begin to uncover the truth behind the city’s sudden appearance.