Sequel to New York Times bestseller INTERWORLD by award-winning writers Neil Gaiman and Michael Reaves. Joey Harker is a hero...After mastering the ability to walk between dimensions, Joey helped save the Altiverse from destruction. But rival powers of magic and science are still out there, seeking to control all worlds. InterWorld's peacekeeping mission is far from finished. And when a stranger follows Joey back to BaseTown things get even more complicated. No one knows who she is or where she's from and, more importantly, why she knows so much about InterWorld. Dangerous times lie ahead...

New York Times bestseller by award-winning writers Neil Gaiman and Michael Reaves.

Joey Harker isn't a hero...Joey Harker is the kind of guy who gets lost in his own house. But one day, Joey gets really lost. He walks straight out of his world and into another dimension. This walk between worlds makes Joey prey to armies of magic and science, both determined to harness Joey's power to travel between dimensions. The only thing standing in their way is Joey - or to be more precise an army of Joeys, all from different dimensions...Now Joey must make a choice: return to the life he knows or join the battle.