Dr. Tony Hill is a clinical psychiatrist whose extraordinary understanding of the criminal mind has been an invaluable asset to the police. Working alongside Bradfield's new detective inspector, Alex Fielding, Tony profiles and tracks down vicious killers in Northern England.

As intelligence officers Carrie and Saul search for the truth behind the bombing of CIA headquarters, lines are blurred between friend and foe and no one can be trusted. While hiding a stunning secret of her own, Carrie helps recruit Brody for a dangerous mission that could offer him a chance at redemption. But when the plan unravels and Brody is targeted deep inside Iran, he must put his life in Carrie's hands.