Not as imposing a superstruct as The Scarlatti Inheritance, but the same powerhouse momentum in the story of three families who live, very well, in a New Jersey suburb and the Ostermans -- their mutual friends -- who come for a get-together weekend, and the mythical man from the C.I.A. who blows them all apart with his revelation of a Russian-based program. As shrill as the siren on the prowl car that keeps turning the corner without ever stopping. Neither does this.