From the author of Body Trace , the new forensics novel in the C.S.U. Investigation series. In the Philadelphia Police Department, the Crime Scene Unit takes blood, sweat, tears-and other DNA samples. The death-by-overdose of Derek Grant, environmentalist and vegetarian, comes as a shock to almost everyone. His distraught, wheelchair-bound father, Horace, who found the corpse, wonders how Derek could do this. And the more rookie forensics detective...