Without mercy
Lisa Jackson.
- New York : Zebra Books, 2011.
- 536 p. ; 18 cm.
Originally published: New York : Kensington Books, c2010.
When her troubled sister Shaylee is sent to an elite boarding school called the Academy, a place where several girls have disappeared, Jules gets a teaching position there to keep an eye on Shay and discovers that something evil lurks in the halls.