Amaia Salazar, a young detective from the north of Spain, has joined a group of trainees at the FBI Academy in Virginia. Haunted by her past and having already tracked down a predator on her own, Amaia is no typical rookie. And this is no ordinary student lecture at Quantico. FBI agent Aloisius Dupree is already well acquainted with Amaia's skills, her intuition, and her ability to understand evil. He now needs her help in hunting an elusive serial...