About the Book: Cross My Heart and Hope to Spy by Ally Carter is the second book in the bestselling Gallagher Girls YA spy series, following Cammie Morgan as she investigates a mysterious security breach at her elite school for spies. When Cammie is blamed for the incident, she must uncover the truth behind the secretive Blackthorne guests while navigating espionage, friendship, danger, and teenage romance. Fast-paced and entertaining, this young adult spy mystery is perfect for fans of XO, Kitty.