I was impressed! 
 This book is part ballerina-cum-psycho, part prison personality parade - except, of course, starring high schoolers instead of adult women. It's also part ghost story and part "teen girls can be the absolute worst to each other" story. The focus is on the messed-up mind of a dancer, the consequences of her actions for the person who was her only real friend, and the life (or loss of life) of teen girls in a juvenile detention facility. 
 Full review to be posted closer to pub date at my blog, Lone Star on a Lark.