In a corn field in Nebraska found the corpse of a woman Tied to a pole, she became a victim of a mad maniac . Soon the police realize that a serial killer is operating in the city, and new victims do not have to wait. The investigation involves Mackenzie White - young , Talented and intelligent detective , who will shut the belt of many aging chauvinist police officers from his precinct, They have to admit ,. That to solve a crime they need her brilliant mind, She managed to close several unsolved cases ,. And they made them stand up [inaudible].......... But even for Mackenzie, this crime seems an insoluble mystery, because neither she nor local officers have ever encountered this. An FBI agent is involved in solving the case, and together they begin an intense hunt for the killer. Oppressed by his own dark past and failed personal life, struggling with his feelings for an FBI agent, Mackenzie tries to find the killer and at the same time cope with his own demons and the darkest memories of his life. Having climbed into the consciousness of the killer and trying to unravel his essence, she realizes that evil really exists. Mackenzie can only hope that she will have time to find the answer before her own life finally collapses. New bodies are being discovered. It's a crazy race against time.... The only way out is to find the killer before he kills again. A dark psychological thriller with a fascinating plot "Before he kills" will make you more than once sit behind the book until late at night. He opens a new exciting series of novels and introduces us to a beautiful new heroine.