Fablehaven by Brandon Mull
Quote: A deep, throbbing beat joined the cacophony, keeping a steady rhythm. As the pulsing percussion increased in volume and tempo, it was accompanied by chanting in a wailing language. Kendra resisted otherworldly images of vicious demons on the hunt.
Despite one half of the siblings, who are our main characters, being incredibly stupid I really enjoyed this book. Lots of mayhem and fairies who are not-so-nice, interesting histories, and the fun of humans being thrust into a world they never imagined.
But seriously, Seth is an idiot. Too stupid to live level of stupid. And he gets away with almost killing everyone with just a shrug and a "it's not your fault". BUT IT IS HIS FAULT.