Here is Cain at his peak, in a new novel that dealt. inevitably, with violent emotions and violent deeds. Here passion and murder are the ingredients of the tale, and what Cain does with them makes this his most terrific adventure in suspense. The hero is a young Confederate spy in Virginia City, the great mining town, at the height of its boom period. The woman for whom he conceives a wild and desperate infatuation is one of the camp’s sporting girls — in every way a dangerous creature, greedy, conscienceless, and utterly irresistible. The story of his fight to possess her, set against that brawling and turbulent scene, produces another unlaydownable book. Mr. Cain writes: “I have tried to put real human beings before the reader, to explain, as plausibly as I can, how a gunman got that way, what the prostitute was doing there, why the mine-owner was a bit of a heel, and so on. Also, I have tried to present the life of the time as it was, and as few people nowadays seem to realize it was.”