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 the Gallagher Academy, a secret spy school for girls, hosts male guests from Knowlton-Hale, Cammie is blamed for a series of security breaches that forces her to clear her name while trying to deny her attraction to an incorrigible hottie named Zach.
When Cammie Morgan visits her Gallagher Academy roommate Macey in Boston during summer break, the two girls soon find themselves trapped in a kidnapper's dangerous plot, with only their espionage skills to save them.
When danger follows Cammie "The Chameleon" Morgan to London, she must again face off with the Circle of Cavan to find the rogue operative who may have infiltrated the halls of the Gallagher Academy for Exceptional Young Women.