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 Pencils: Andy Smith Tom Grindberg Val Semeiks Jeff Johnson Ron Lim Bart Sears Inks: Mark Pennington Bill Anderson Chip Wallace