Young policeman Neil Douglas rushes to the aid of a woman who has been stabbed on London's Hampstead Heath. Seeing a man standing over the body, he lashes out with his baton, striking the man in the head. There is just one problem: the man didn't attack the woman; he was coming to her aid. Neil has just put an innocent man in a life-threatening coma. "And the killer is still on the loose." Supended from duty and tormented by guilt, he is determined to trackdown the escaped killer. All the while he is taunted over the airwaves by a pretty but bitchy American phone-in show presenter. But who...