| Issue | #21 |
| Published | December 2008 [October 22, 2008] |
| Cover Price | 2.99 USD; 2.99 CAD |
| Pages | 36 |
| Editing | Mike Carlin; Rachel Gluckstern (associate) |
| Notes | Cover forms a triptych with Trinity #19 and Trinity #20. |
| Characters | Wonder Woman [Diana Prince] (statue) |
| Genre | Superhero |
| Pencils | Carlos Pacheco (signed) |
| Inks | Jesus Merino (signed) |
| Colors | Allen Passalaqua (signed) |
| Notes | Cover forms a triptych with Trinity #19 and Trinity #20. |
| Characters | Batman [Bruce Wayne]; Superman [Clark Kent; Kal-El]; Wonder Woman [Diana Prince]; Morgause (flashback); Elaine (flashback); Merlin Greybeard (flashback); Gorlois (flashback; death); Igraine (flashback); Justice Underground [Star Sapphire; General Grodd; Sir Solomon Grundy; Q-Ranger] (Antimatter Earth; flashback); Mrs. Nashton (Antimatter Earth; flashback; death); Sarah Nashton (Antimatter Earth; flashback; death); Tad Nashton (Antimatter Earth; flashback; death); Morgaine Le Fey (villain; origin); Enigma [Edward Nashton; also as Quizmaster] (villain; origin; Antimatter Earth); Kanjar Ro [as Despero] (villain; origin); Crime Syndicate of Amerika [Owlman; Ultraman] (Antimatter Earth; villains; flashback); Mouse (Antimatter Earth; villain; flashback) |
| Synopsis | The origins of Morgaine Le Fey, Enigma and Despero are revealed, with the biggest secret being that Kanjar Ro has been disguised as Despero the whole time, and he has caused the magical spell to go awry. |
| Genre | Superhero |
| Script | Kurt Busiek |
| Pencils | Mark Bagley |
| Inks | Art Thibert |
| Colors | Pete Pantazis |
| Letters | Pat Brosseau |
| Characters | Justice League of America [JLA; Firestorm [Jason Rusch; Gehenna]; Green Lantern [John Stewart]]; Tawny Stewart [Tawny Young] (John's wife on new Earth); Hal Stewart (John's son on new Earth); Guy Stewart (John's son on new Earth); Justice Society International [Atom Smasher [Albert Rothstein]; Brainwave; Cyborg [Victor Stone]; Hourman [Rick Tyler]; Liberty Belle [Jesse Chambers]; Skyrocket [Celia Forrestal]; Starfire [Koriand'r]; Tomorrow Woman; Triumph [Will McIntyre]]; Void Hound (villain) |
| Synopsis | The Void Hound tries to possess John Stewart. Firestorm tries to help, but they are both attacked by Justice Society International. |
| Genre | Superhero |
| Script | Kurt Busiek (plot); Fabian Nicieza (plot; script) |
| Pencils | Scott McDaniel |
| Inks | Andy Owens |
| Colors | Allen Passalaqua |
| Letters | Pat Brosseau |
| Script | Rex Ogle |
| Notes | Rex Ogle shows one half of the brackets of the Dark Side Club Tournament happpening in the Terror Titans mini-series. Hot list - DCU Halloween Special #1, Rann/Thanagar Holy War #6 and Superman/Batman 53. House ad for Trinity #22. |