The tall, darkly handsome man was grinning at Dr. James Lawrence from the wrong side of a gun. "Don't do anything foolish," the stranger said. The psychiatrist swallowed and looked at the muzzle of the weapon. The gun didn't look like any he had ever seen before, but he had no doubt that it was deadly. "What do you want?" he asked. He had never faced a gun before, but he found, oddly enough, that he wasn't at all frightened. There was simply a tense expectancy, a feeling of what's-coming-next? a