Collecting the two-part miniseries that brought together two Flashes—Jay Garrick and Wally West—and two Green Lanterns—Alan Scott and Kyle Rayner—to battle the menace called Alien X in a story that begins in the 1940s and concludes in the modern era!

Written By:
Mark Waid, Brian Augustyn, Ron Marz
Andy Smith, Tom Grindberg, Val Semeiks, Jeff Johnson, Ron Lim, Bart Sears
Mark Pennington, Bill Anderson, Chip Wallace
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