Did King Herod slaughter Bethlehem's babies? Who was the real King Arthur? What made George III insane? Was Princess Diana murdered? Discover the secrets of royal history's most enduring mysteries and scandals, from ancient times to the present. You'll learn the historical context, scientific findings, theories, and controversies surrounding each puzzling episode, and you'll see how investigators have used every means available—including the latest historical research, psychological analysis, forensic technology, and sheer guesswork—to shed new light on these fascinating regal conundrums.