In a desolate part of Brooklyn, a retired history professor plots mass murder The withered old man speaks into a tape recorder. This is not a confession, he explains, but a presentation. He is Charles Witter Kirwan, a former academic who has lived his whole life in the same house and watched his childhood neighborhood turn from white to black. Now, stricken with terminal cancer, Kirwan has decided to fight back against his neighbors. His may be the ravings of a lunatic racist, but the dynamite in his basement is real. He is going to blow up the apartment building next door--and take some sixty African Americans with it.   Private investigator John Milano is on the trail of a stolen painting when he catches wind of Kirwan's mad plan. He has forty-eight hours to stop the bombing, and to keep those innocents from following this twisted, hateful man into death.