Prince John's biggest fear? Becoming King, and everything to do with it, from the sheltered life, to someday having to get married. Celia, a lady knight, minus the 'Lady' if she can help it, is not looking forward to coming of age and attending the High Ball which she thinks is nothing more than a market for single girls. The two have hated each other since childhood, but when the stress gets to John and he does something drastic, Celia's the only one who can help.

Macey McHenry—Glamorous society girl or spy-in-training? W.W. Hale V—Heir to an American dynasty or master thief? There are two sides to every coin. Whether these two can work together is a tossup. Born into privilege, Macey and Hale are experts at mingling with the upper class. But even if they’ve never raised an eyebrow at the glitz, neither teenager has ever felt at home with the glamour. When Macey and Hale meet at a society gala, the party takes a dangerous turn. Suddenly they’re at the center of a hostage situation, and it’s up to them to stop the thugs from becoming hostile. Will Macey’s spy skills and Hale’s con-man ways be enough to outsmart a ruthless gang? Or will they have to seek out the ultimate inside girl to help? The worlds of Heist Society and the Gallagher Girls collide in Ally Carter’s fast-paced, high-stakes and tantalizing new story. Get a behind the scenes glimpse as Ally delivers an irresistible thriller that is full of her signature style and savvy twists.