- Script
- John Byrne (credited)
- Pencils
- John Byrne (credited)
- Inks
- John Beatty (credited)
- Colors
- Petra Goldberg (credited as Petra Scotese)
- Letters
- John Costanza (credited)
- Job Number
- G-3728
- Genre
- superhero
- Characters
- Superman [Clark Kent; Kal-El]; Supergirl [Matrix]; Cat Grant; Jimmy Olsen; Captain Maggie Sawyer; Lois Lane; Sarah Olsen; Professor Thaddeus Killgrave (villain, introduction); Psi-Phon [J'ankway] (villain, introduction); Dreadnaught [Breemmill] (villain, introduction); Lex Luthor (villain); Dr. Gretchen Kelley
- Synopsis
- A spaceship arrives, and after Superman investigates, he starts losing his powers, one at a time.
- Reprints
Story continues in Adventures of Superman (DC, 1987 series) #442.
- Script
- Renee Witterstaetter
- Letters
- typeset
- Job Number
- L-3162
- Genre
- superhero
Letters from readers - Brian Simpson, Jeff Mitchell, Roger D. Case, Joe Frank, Mathew A. Young, Ann C.H. Brachwitz, Dennis Tucker, Stephen Robinson, Jonathan Ezor and Greg Manter - and responses from Renee Witterstaetter.
The third printing only has the first of the two pages, stopping in the middle of Ann C.H. Brachwitz's letter.