Dreamwalker'S Child by Steve Voake
Sam Palmer hates living in the country - he has no friends and life is dull. Until a bizarre bicycle crash leaves his body in a coma. Now he has far bigger problems. Sam wakes in Aurobon, a world similar to his own, and discovers that his accident was part of an elaborate abduction. Dark forces led by the brutal Odoursin need him for a deadly agenda, one that threatens to reach beyond Aurobon and into his own world. Aided by Skipper - an adrenalin-loving girl pilot - Sam must join the fight against Odoursin and find a way to return home.