Cross My Heart and Hope to Spy (Gallagher Girls #2)

Cammie Morgan is a CIA legacy and attends the premier school in the world for spies. The school hosts some mysterious guests with the code name Blackthorne. When Cammie is blamed for a security breach that threatens to expose the school's top secret status, she and her friends face danger to clear Cammie's name and learn the truth about Blackthorne.