It's the triumphant return not only of US, but also of the Inferior Five, in their own title that no one demanded! Secret Agents!...
While Superboy deals with the mild annoyance of young Lex Luthor with the powers of a 5th-dimensional imp, Krypto has the most exciting day...
Superman and Batman are kidnapped to another dimension and forced to battle to the death for the entertaiment of the masses! And poor Lois...