When Newbery Medal champion Neil Gaiman and Emmy Award winner Michael Reaves teamed up, they created the bestselling YA novel InterWorld.

InterWorld tells the story of Joey Harker, a very average kid who discovers that his globe is only among a trillion alternate earths. Some of these earths are ruled by magic. Some are ruled by science. Each is at war.

Joey teams up with alternate versions of himself from a range of these worlds. Jointly, the army of Joeys must battle evil magicians Lord Dogknife and Lady Indigo to keep carefully the balance of power between all the earths steady. Teens-and tweens and adults-who obsessively read the His Dark Components and Harry Potter series will be riveted by InterWorld and its sequel, The Metallic Dream.