Good Used. Nobody Moves Around Inside The Messy Heads Of Serial Killers Like Dr Tony Hill. Now Heading Up The Recently Founded National Profiling Task Force, He Sets His Team An Exercise: They Are Given The Details Of Thirty Missing Teenagers And Asked To Use Their New Techniques To Discover Whether There Is A Sinister Link Between Any Of The Cases. Only One Officer, Shaz Bowman, Comes Up With A Concrete Theory, But It Is Ridiculed By The Rest Of The Group Until Someone Murders And Mutilates One Of Their Number.