Seventeen year old Cassie Hobbes has a gift for profiling people.  Her talent has landed her a spot in an elite FBI program for teens with innate crime-solving abilities, and in some harrowing situations.  After barely escaping a confrontation with an unbalanced killer obsessed with her Mother's murder, Cassie hopes she, Dean, Lia, Michael, and Sloane can stick to solving cold cases from a distance.  But when victims' of a brutal new serial killer start turning up, the Naturals are pulled into an active case that strikes too close to home:  the killer is a perfect copycat of Dean's incarcerated father.  Dean wants nothing to do with is father or the case, but the FBI needs his insight. As much as his friends want to help him, Cassie is not sure how they can, especially when her feelings for Dean are almost as complicated as the case itself.  And on top of all that, the area has to contend with a supervisor who wants to shut the Naturals programs, the drama that comes with five very different teens living under one roof, and a slew of cold cases that need their attention Provided by publisher.