The Gallagher Academy for Exceptional Young Women is a fairly typical all-girls' school--except that it's a school for spies. Cammie Morgan may be an elite spy-in-training, but she's also beginning her most dangerous mission--she's falling in love. As a sophomore at a secret spy school and the daughter of a former CIA operative, Cammie is sheltered from "normal teenage life" until she meets a local boy while on a class surveillance mission.

When Cammie Morgan arrives at her friend Macey's five-star hotel for the Democratic National Convention, where Macey's father is about to receive the vice presidential nomination, she thinks she's in for an exciting end to her summer break. But if you're a Gallagher Girl, 'exciting' and 'deadly' are never far apart.

When seventeen-year-old Cammie wakes up in a convent high in the Alps, she slowly comes to realize that she's been tortured, the last four months have been erased from her mind, and an ancient terrorist organization is hunting for her.