Young Justice [Impulse [Bart Allen]; Robin [Tim Drake]; Superboy [Kon-El]]; Justice League [Batman [Bruce Wayne]; Flash [Wally West]; Superman [Clark Kent; Kal-El]]; Max Mercury; The Secret (first appearance); Dr. Charles
Synopsis
Robin, Impulse, and Superboy capture a young girl (Secret) who is a gaseous being, but let her escape in secret.