Story: "Mystery In Space" (21 Pages)

Credits:

Mark Waid (plot, script)
Arnie Jorgensen (pencils)
David Meikis (inks)
Ken Lopez (letters)
Pat Garrahy (colors)
Heroic Age (color separations)
Dan Raspler (edits)

Feature Characters:

Superman
Aquaman
Batman
Martian Manhunter
Flash III
Green Lantern (Kyle Rayner)
Wonder Woman (Hippolyta)
Steel III
Orion
Big Barda

Guest Star:

Adam Strange (last in flashback in #21)

Supporting Character:

Alanna
Aleea (both last in flashback in #21)

Villains:

The En'teran Slavemasters (first appearance; last in flashback in #21)

Comment: This issue also features a four-page preview of Justice League: The Nail by Alan Davis and Mark Farmer.