Three-part television drama in which a man's life is destroyed after his 15-year-old son Alex is stabbed and dies as a result of his injuries. Dan (John Simm) seeks out surgeon Jon Allerton (Adrian Lester) in an attempt to pinpoint the blame for his son's death upon him and accuses him of negligence. As Dan's life begins to spiral further downwards, the two men become entangled in their own psychological warfare.