Nazi recruit 865 ducked into the U.S. attorney’s office in the Southern District of New York, rode the elevator to the seventh floor and sat down in a hushed conference room, where three federal prosecutors were waiting. He smiled, a practiced smile, the smile of an old friend. Tufts of silver hair were combed neatly over his ears, and a mustache grown long ago straddled a thin upper lip. He was lean from years of careful eating and late nights spent in the dance halls of Munich after the war.