The last thing Cammie Morgan remembers is leaving the Gallagher Academy
to protect her friends and family from the Circle of Cavan--an ancient
terrorist organization that has been hunting her for over a year. But
when Cammie wakes up in an Alpine convent and discovers that months have
passed, she must face the fact that her memory is now a black hole. The
only traces left of Cammie's summer vacation are the bruises on her body
and dirt under her nails, and all she wants is to go home. Once she
returns to school, however, Cammie realizes that the Gallagher Academy
now holds more questions than answers. Cammie, her friends, and
mysterious spy-guy Zach must face their most difficult challenge yet as
they travel to the other side of the world, hoping to piece together the
clues that Cammie left behind. It's a race against time. The Circle is
hot on their trail and will stop at nothing to prevent Cammie from
remembering what she did last summer.