Adventure Comics #320

In "Revenge of the Knave from Krypton! Part I," Superboy finds himself unexpectedly drawn into a high-stakes interstellar chase when Dev-Em, a mysterious agent of the Inter-Stellar Counter-Intelligence Corps, arrives at Legion headquarters to capture the notorious Cosmic Spy Legion leader Morlock the Merciless—only to have the mission handed over to Superboy. Written by Jerry Siegel and Otto Binder, with art by John Forte, George Papp, and Sheldon Moldoff, and lettered by Milton Snapinn, this 1964 adventure blends sci-fi intrigue and classic superhero action, all framed by Curt Swan’s dynamic cover and George Klein’s sharp inks.