| Issue | #20 |
| Published | July 2007 |
| Cover Price | 2.99 USD; 3.65 CAD |
| Pages | 36 |
| Editing | Peter Tomasi; Elisabeth V. Gehrlein (assistant) |
| Notes | U.S. on sale date: 2007-05-31 |
| Characters | Green Lantern [Hal Jordan]; Star Sapphire [Cowgirl; Jillian Pearlman] |
| Genre | Superhero; Science Fiction |
| Pencils | Ivan Reis (signed) |
| Inks | Oclair Albert (signed) |
| Colors | Moose Baumann (signed) |
| Notes | U.S. on sale date: 2007-05-31 |
| Characters | Green Lantern [Hal Jordan]; Carol Ferris; Tom Kalmaku; Star Sapphire [Cowgirl; Jillian Pearlman]; The Zamarons |
| Synopsis | Hal frees Cowgirl from the Star Sapphire's power. |
| Genre | Superhero; Science Fiction |
| Script | Geoff Johns |
| Pencils | Daniel Acuna |
| Inks | Daniel Acuna |
| Colors | Daniel Acuna |
| Letters | Rob Leigh |
| Characters | Sinestro Corps [Amon Sur; Bedovian (origin); Lyssa Drak] (villains) |
| Synopsis | The origin of Bedovian. |
| Genre | Superhero |
| Script | Geoff Johns |
| Pencils | Dave Gibbons |
| Inks | Dave Gibbons |
| Colors | Moose Baumann |
| Letters | Rob Leigh |
| Script | Dan Didio |
| Letters | typeset |
| Notes | Dan Didio explains the Multiverse. Hot list - Amazons Attack #2, Countdown #48 and Justice Society of America #6. House ad for Green Lantern: Sinestro Corps Special #1. |