InterWorld

InterWorld is a fantasy and science fiction novel by Neil Gaiman and Michael Reaves. The book was published in 2007 by EOS, an imprint of HarperCollins Publishers. It follows the story of Joey Harker who, together with a group of other Joeys from different Earths in other parallel universes, try to stop the two forces of magic and science from taking over all of the Earths in different universes.

==Plot summary== Joey Harker is an average high school student living in Greenville. He has trouble finding his way around his own house, let alone the town. On a field trip set by his Social Studies teacher, Mr. Dimas, Joey finds himself lost in the city, and then enters a strange fog; when he emerges, everything has changed. All the cars are brightly coloured, and the police cars are flashing green and yellow instead of blue and red. When he goes back to his home, he discovers that he does not exist anymore; instead, there is a girl named Josephine living there. He runs outside and meets a man wearing a mirrored mask, who introduces himself as Jay. But before Jay can explain anything, three men in grey outfits appear, standing on floating silver disks, all trying to catch Joey using silver nets. Joey runs away, and unintentionally enters the fog again.