Silent Slaughter

He chooses his tools with precision. Stalks his victims with cold efficiency. Plans his attack using mathematical logic. And now he is ready to play. . .
When the first of a series of letters from a serial killer arrives at the station, NYPD psychologist-turned-profiler Lee Campbell suspects the writer is daring him to match wits with a dangerous—and brilliant—criminal mind. After all, it’s what Campbell does best. But once this "Alleyway Strangler" starts leaving specially targeted messages...