Collects stories from Adventure Comics (Vol 1) #283, 289, 300, Action Comics #288, 298, 307, 310, 336, Superman's Girlfriend Lois Lane #33, Superman's Pal Jimmy Olsen #62, Superman (Vol 1) #157, 164, 205, Superboy (Vol 1) #104, and Who's Who: The Definitive Directory of the DC Universe #18.
*The Phantom Zone: an intangible dimension where Krypton's leaders exiled their most dangerous criminals. Banished to a ghostlike state, its prisoners were unable to age, touch or communicate with the outside world.
Now, long after Krypton's destruction, only Superman holds the key to getting in - and getting out of - this deadly dimension. Over the years, the Zone's inhabitants have managed to escape their incarceration, seeking their vengeance on the Man of Steel! *Source: Back Cover