I thought I was prepared for most scary situations. I've been almost kidnapped twice, fake kidnapped once, targeted by one terrorist organization and two very cute boys. But this moment was truly terrifying...

Cammie 'The Chameleon' knows by now that even she can't hide from danger. But when she discovers that one of her most-trusted allies is a rogue double-agent, Cammie questions her trust in her classmates, her teachers - and her own heart...

This is book 4 in Gallagher Girls .

There are 320 pages in this book. This book was published 2015 by Hachette Children's Group .

Ally Carter is is the author of two adult books and the phenomenally successful GALLAGHER GIRLS and HEIST SOCIETY series. She loved school so much she kept going. and going. and going. until finally she had to graduate. She has degrees from Oklahoma State University and Cornell University. Check out her website: allycarter. com