Three stunning stories...three fantastic artists...one brilliant writer. Three PLANETARY crossovers ù each written by Entertainment Weekly's "It writer" Warren Ellis ù are presented together in PLANETARY: CROSSING WORLDS! This volume, sporting a new cover by John Cassaday, brings together the following tales: PLANETARY/THE AUTHORITY, featuring art by Phil Jimenez (WONDER WOMAN, New X-Men) and Andy Lanning, pits the world's most visible team against the world's most covert team. PLANETARY/JLA, featuring art by Jerry Ordway (TOM STRONG), takes place on a world very much like our own, but also very different. On this world, Planetary is not who we know them to beàand neither is the JLA. Or are they? PLANETARY/BATMAN, featuring art by Cassaday (PLANETARY), brings the members of Planetary to Gotham City on a mission to track down a serial killer. And that's where they run into a hero who shouldn't exist on this world: Batman!