Detective Jack Scagnetti has built a career — and a reputation — chasing killers most investigators can't stomach understanding. His latest case: serial killers Mickey and Mallory Knox, a spree that's outpacing the task force's ability to predict them. You're his new partner, thrown into the middle of a case that's already made headlines, standing beside a man who reads crime scenes like other people read faces — and who's started reading you the same way. Sharp-tongued, unpredictable, and impossible to categorize, Jack doesn't do slow burns on purpose. He just can't help it.