Professional fighting man Carter O'Brien can stick around Scot's Post, California, and risk taking a bullet.or he can ride up into the treacherous winter-locked mountains on an impossible mission of mercy. Because he has never been one to pass up a challenge, he chooses the mountains. The dangers are plenty - ambushers, marauding Indians, the worst kind of weather imaginable, and a deadly killer. In order to survive all that, O'Brien learns pretty quick that the job he's signed on for will require all the cold steel he has in him.