Cassie is considered a "Natural". At seventeen, Cassie is recruited to the Naturals program in the FBI, to become a profiler. Cassie is assigned to help with cold cases. She moves into a house with four other kids in Quantico, Virginia. Everyone has something that they are good at. Michael can read people's emotions, Lia is a human lie detector, Sloane is great with numbers and statistics and Dean, like Cassie, can read people.
Cassie recognizes that a serial killer is killing women that look similar to her mother. Soon, Cassie is being targeted by that killer. It turns out that Cassie mentor, is her mother's younger sister as well as the killer. Soon, Cassie and the others are soon given active cases that tends to put them in dangerous situations. As the books progress, Cassie learns more about her mother's murder.
These books had me hooked within the first chapter. These books are intense and they get into the minds of serial killers. I had a hard time putting them down. Heck, I read the first 3 books within a week! If you like the t.v. show Criminal Minds, this is book series for you.