A killer is on the loose and he's blurring the line between fact and fiction. His prey - the writers of crime novels. But this murderer is like no other; his bloodlust shatters all the conventional wisdom on how serial killers operate. And for one woman the desperate hunt to uncover his identity becomes a matter of life and death. Professor Fiona Cameron is an academic psychologist who uses computer technology to track serial offenders. She vowed never to work for the Met again after they went against her advice and badly screwed up an investigation as a result. But when her lover, thriller writer Kit Martin, tells her a fellow novelist has been murdered, Fiona can't help taking an interest.