It feels so odd working alongside him after all our battles together. But Brainiac is only a computer... One who was sadly programmed to be destructive... Which I was able to reprogram for good. I wish it were that easy with all men of evil. I wish there were some switch I could pull that would turn Luthor's genius from a tool of destruction-- Into one which could provide hope! If all evil could be eradicated that simply, mankind could enter into a new golden age... And crime-fighters like myself could happily retire, knowing our super-skills were no longer needed! 
- — Superman
Action Comics #528 is an issue of the series Action Comics (Volume 1) with a cover date of February, 1982.
Synopsis for "Superman: Star-Kill!"
A reformed Brainiac enlists Superman's help to try to destroy a doomsday device he created in his nefarious days, which is headed for Earth.
Appearing in "Superman: Star-Kill!"
Featured Characters:
- Superman (Flashback and main story) (from Action Comics #514)
Supporting Characters:
- Brainiac (Flashback and main story) (from Action Comics #514)
- Lois Lane
- Perry White
- Jimmy Olsen
- Morgan Edge
- Steve Lombard (Unnamed)
Antagonists:
Other Characters:
- Galaxy Communications Employees (Unnamed)
- Doonesbury (Mentioned only)
- Waxman Chain (hinted at buying the Daily Planet) (Mentioned only)
- Brainiac Robo-Duplicates (Hologram) (Cameo) (Flashback only)
- Altairians (Hologram) (Cameo) (Flashback only)
- Alien Race (Unnamed) (In a vision) (Cameo)
- Olionians (Cameo) (Single appearance; dies)
- Rao (Mentioned only)
Locations:
- Space
- Kordos (Hologram) (Cameo) (Flashback only)
- Altair-3 (Hologram) (Cameo) (Flashback only)
- Planet (Unnamed) (Mentioned only)
- Planet (Unnamed) (Mentioned only)
- Olion (Destroyed)
- Krypton (Mentioned only)
- Earth
- Metropolis
- Galaxy Communications Building
- Boardroom
- Apartment (Unnamed)
- Galaxy Communications Building
- North Pole
- Fortress of Solitude (Cameo) (Flashback only) (from Action Comics #514)
- Union of Soviet Socialist Republics
- Caspian Sea
- Ocean (Unnamed) (unknown location) (Cameo)
- Desert (Unnamed) (unknown location) (Cameo)
- Volcano (Unnamed) (unknown location) (Cameo)
- Metropolis
Items:
- Satellite (Hologram) (Cameo) (Destroyed) (Flashback only)
- Planet-Eater (First appearance & origin)
- Fusion Light Beam (Unnamed)
Vehicles:
- Brainiac's Spacecraft
Synopsis for "Aquaman: Land-Masters of the Sea!"
Aquaman finds himself teleported to the world of Vortuma, where he communicates with another hexapus and learns about their society. While on a tour of their city, Aquaman witnesses the Land-Masters, human tyrants who terrorize the sea-dwelling hexapi, make an attack on the hexapus governor. He fights off the Land-Masters, but the governor insists he hide, since the tyrants will demand his death for the deed. Aquaman decides to help the hexapi gain their freedom from the Land-Masters, but is abruptly confronted by an entire Land-Master army.
Appearing in "Aquaman: Land-Masters of the Sea!"
Featured Characters:
- Aquaman (Flashback and main story) (from Action Comics #527)
Supporting Characters:
- Land-Masters
- Hexapuses (Origin)
- Governor (Unnamed)
- Hexapuses (Origin)
Antagonists:
- Land-Masters (Origin)
Other Characters:
- Air Wave (Cameo) (Flashback only) (from Action Comics #527)
- Green Lantern (Cameo) (Flashback only) (from Action Comics #527)
- Red Tornado (Mentioned only)
- Flash (Barry Allen) (Mentioned only)
- Thomas Edison (Mentioned only)
Locations:
- Earth
- Atlantic Ocean (Cameo) (Flashback only)
- Aquacave (Mentioned only)
- Atlantic Ocean (Cameo) (Flashback only)
- Vortuma
- Cave
Items:
- Green Lantern Ring (Cameo) (Flashback only) (from Action Comics #527)
- Justice League Teleporter (Mentioned only)
- Zeta-Beam
- Telepathic Communicator (First appearance)
- Phosphorous-Algae coated Stones (First appearance)
Vehicles: