Leading criminologist David Wilson reopens one of the most compelling mysteries of all time: the death of Russia's first dictator. He was a man who took what he wanted and ruled his huge empire by terror - but was Ivan the Terrible himself murdered? David Wilson's investigations begin with age-old rumours that Ivan was strangled by enemies in his court, his search takes him across Russia, back to London, unravelling a story of intrigue centring around the English Queen Elizabeth I. Timewatch gathers medical experts and forensic scientists to prove that Ivan was in fact poisoned, and by someone he trusted, but there's one final twist in the tale...