Immersing himself in his work as a surgeon for the London Metropolitan Police to ward off memories of his time as an army medic, Dr. Harry Kent is sent to treat a mentally ill teen who has taken hostages in a fast-food restaurant.
After a suspended whistle blower at a hospital is found dead in an apparent suicide, medical examiner Dr. Harry Kent and detective Frankie Noble discover that she was actually murdered and try to unlock the secrets that led to her death.