Dorothy Must Die by Danielle Paige

 I’ve never been a huge Wizard of Oz fan, so I gotta admit I loved this title.  Dorothy has been ruler of Oz for so long that the power has corrupted her.  She can’t get enough magic to satisfy her—and now she’s making the monkeys and munchkins work for her to mine more.  In comes Amy Gumm, a troublemaker from Kansas, who is challenging Dorothy's authority. 

Gotta say, I hate that there is a sequel.  But I know I’ll read it!