iBooks; $22.95

When Marv Wolfman and George Pérez took on the wild and wooly multiple continuities of the DC Universe 20 years ago, the created one of the most enduringly popular “event” comics in the history of superheroes, Crisis On Infinite Earths. Now with fans again buzzing about a big DC Comics event, Wolfman is revisiting Crisis and expanding upon it in a new novel from iBooks. Underneath a cover by Pérez and painter Alex Ross, Wolfman explores both the familiar ground and territory previously unexplored.