He wants nothing from his victims but their lives; to feed off the fear he instils before murdering them in cold blood. His newfound urge to kill will not be denied as it develops into an addiction as compulsive as any other. No viable trace evidence is found at any of the crime scenes. The killer does not have any physical contact with, or rob his chosen prey. DCI Matt Barnes and his team believe that they are hunting an opportunist thrill killer, who is goading them by leaving pictures of a clown's face at each of the scenes. It is, as usual, a race against time to identify and apprehend the perpetrator, because they know that he will kill again and again, until he is stopped.