After a prison riot erupts into violence DCI Red Metcalfe is face to face with the ring leader - the man who once held him hostage and nearly drove him mad. Injured prisoners are moved to an...

After a prison riot erupts into violence DCI Red Metcalfe is face to face with the ring leader - the man who once held him hostage and nearly drove him mad. Injured prisoners are moved to an overstretched hospital, but a killer is amongst them, preying on their weaknesses. As the murders spiral out of control, can Red and his team put aside their own emotional torment and find a method to the killer's madness?