Chosen Ones by Veronica Roth

Sloane and four others teens with magic powers slayed "The Dark One" making them superheroes overnight. Ten years has passed and they have all had trouble dealing with celebrity but now a new wrinkle has occurred. They are sucked into a parallel universe where - gasp! their Dark One is still alive and causing trouble. It is up to them, mainly Sloane, to get rid of this force and get back home.
The beginning showed real promise of being a different spin on fantasy and I loved the characters and how they were dealing with all these issues and then came the other universe and I began to lose the story thread. It is the perfect blend of adult language and humor written within a young adult fantasy framework. I loved Roth's DIVERGENT series and think this will be a great bridge into books for the adult market. It read like a mash-up of Marvel /DC comic superheroes meets THE WALKING DEAD meets he who shall not be named from Harry Potter.