After about twenty minutes, everything in the Gato Negro had started to take on that false but radiant sense of deep meaning that always accompanied chemical memory enhancement, and then these other guys had come in. Three of them, very well dressed. They breezed past the muscle guy at the door, without being patted down for weapons. And this caused Don Aldo, and Juan, and Paco, and Snoopy immediate concern, for Monterrey was not their turf, and their own ceramic Saturday-night specials were in the possession of the house.