Hooooooowwwww???? How could Ally Carter make this my favorite book in this series so far??? This book was so exciting, and I think the reason I like it best out of all three is that it had more of a mystery feel to it, and the romance was less. Plus, it gave all of my characters awesome moments and chances to show off their awesome spy skills. A few of the characters did dumb things (*cough* CAMMIE) but I've kind of realized that "doing dumb things" is part of Cammie's character. Really loved this book in the series, but THAT CLIFFHANGER THO. 
 Series predictions (read at your own risk) (although I am completely guessing here and you're probably fine just reading them) (also, if you've read farther than me, please DO NOT comment below and spoil things ;) ) (okay, I'm done): 
 (view spoiler)[Cammie might actually be a descendant of Gillian Gallagher ON HER DAD'S SIDE. Or the people are seeking her for revenge because of something that her mom or dad or Aunt Abby did. Or the Circle of Cavan simply wants to meet the famous Cammie Morgan and offer her a sponsorship and a free trip to Hawaii. (This last one may not be serious.) (hide spoiler)]