Invisible Witnesses

An attractive female student is found dead in the darkened gloom beneath an overpass . . .
The DA moves quickly to pin the brutal slaying--a "mugging gone wrong"--on a homeless man known to frequent the area. As Detective "Gunny" Hawkins of the Bristol Police investigates the seemingly impressive evidence and facts of the case, he grows less and less sure that the DA has the right man . . . and certain that something far more insidious is going on than a mugging. It becomes clear to Hawkins ...