"The Fiend in the Fortress of Solitude"
Clark Kent becomes the hostage as three men plan on invading Superman's fortress.
"Challenge of the Expanding World" reprinted from Brave and the Bold #53.
"The Planet of Prey"
When Superman investigates an unknown world, his senses go wild as he can no longer tell real from fake (Jor-El, Lara, Jimmy Olsen and Lois Lane are all illusions).