...Later on this century, she is destined to play a key role in--but I can tell you no more! 
- — Null-O
Action Comics #503 is an issue of the series Action Comics (Volume 1) with a cover date of January, 1980.
Synopsis for "A Save in Time!"
A powerful entity from the future comes back to Superman's time with a warning: correct a fluctuation in the time-stream he has caused, or see the universe perish.
Appearing in "A Save in Time!"
Featured Characters:
Supporting Characters:
- Lana Lang
- Morgan Edge (Mentioned only)
- Jimmy Olsen
- Josh Coyle
Antagonists:
- The Astounding Kolzer (Also in a vision) (Single appearance; dies)
- Three Bank Robbers (Unnamed) (Also in a vision) (Single appearance)
Other Characters:
- Null-O (Single appearance)
- George (apartment doorman) (Behind the scenes)
- WGBS Employees (Unnamed)
- Meteorologist (Unnamed) (Mentioned only)
- Chet (cameraman)
- Janitor (Unnamed)
- Caveman (Mentioned only)
- Metropolis Police Department (Mentioned only) in (In a vision)
- S.T.A.R. Labs
- Guards (Unnamed) (Mentioned only)
- Mayor (Unnamed) (Mentioned only)
- Two Traffic Copter Occupants (Unnamed) (Single appearance)
Locations:
- Space
- Earth
- Metropolis
- S.T.A.R. Labs
- Metropolis Police Department (Mentioned only)
- Upper East Side
- Kolzer's Penthouse
- Galaxy Communications Building
- Lana Lang's Office
- Studio B
- WGBS Studios
- Metro Park
- Mount Cessna (several hundred miles northwest of Metropolis)
- Metropolis
- Earth
Items:
- Pseudo-Comet (Destroyed)
- Wristwatch TV
- Anti-Gravity Device
- Rainbow
Vehicles:
- Getaway Car (In ruins)
- Traffic Copter
Concepts:
- Timestream (Mentioned only)
Notes
- Letter to the editor from Tamsyn O'Flynn.
See Also