Brought together during their FBI training in Quantico, a number of recruits face a harsh test when one of them is suspected of a large-scale bombing incident, forcing them to face the question of whether they really know each other.
When Alex starts training for the CIA, she finds herself at the heart of the major conspiracy that puts her life on the line.
Three years have passed with Alex living peacefully in a remote Italian town. But the past comes calling, and Alex is drawn to her old life when Shelby's life is in danger.