Working virtually alone at first, Allan Gerson, a former diplomat and prosecutor of Nazi war criminals, took on the case and spent the next eight years on the families' quest for justice. In this high-stakes game of international power politics and legal maneuvering, there were friendships, jobs, and reputations lost, but a precious principle—that of accountability under the law—was strengthened and preserved. Now Gerson and his co-author, Newsweek writer Jerry Adler, follow the threads of this extraordinary tale back to that deadly night over Lockerbie, Scotland—and forward into a new era of international justice, when terrorists will learn to fear the righteous retribution of their own victims.