Ivan the Terrible, Russia's first Tsar, led a brutal and unpredictable life. A renowned sadist, Ivan was the originator of Russia's secret police. He fortified walls to counter the advancing age of artillery, expanded the borders of his nation and built a new generation of Kremlins. Follow a team of historical detectives who use evidence from recent excavations, scientific studies and historical documents to piece together clues to what Ivan's Russia looked like.