FBI Agent Ella Dark, 29, is given her big chance to achieve her life’s dream: to join the Behavorial Crimes Unit. Ella has a hidden obsession: she has studied serial killers from the time she could read, devastated by the murder of her own sister. With her photographic memory, she has obtained an encyclopedic knowledge of every serial killer, every victim and every case. Singled out for her brilliant mind, Ella is invited to join the big leagues. But when a killer strikes in the swamps of Louisiana, Ella soon comes to learn that the real thing is nothing she could expect. Face to face with a real murder, a real killer, and a real ticking clock, Ella realizes she can’t rely on her knowledge. She must learn to trust her instinct, and allow herself to enter the dark canals of a real killer’s mind. If she gets it wrong, her career is at stake. And so is the next victim’s life. Will Ella’s talent be an asset? Or the source of her downfall?