Story 1: The Lad Who Wrecked The Legion!
The Legionnaires accept Command Kid, the newest member on their team. His attitude is surly and superior to the other members, but it is eventually revealed that he is actually possessed by a demon. The Legion of Super-Heroes defeat the demon and Command Kid is safe, but he has to resign from the Legion since his super powers were from the demon.
Story 2: The Man Who Knew Superboy's Identity! reprinted from Superboy #36
Superboy gets clues from "The Mask", someone who obviously knows his secret identity. It is revealed that the "Mask" is actually his father, preparing for Superboy's Super Birthday Party!