April 14, 1865. One gunshot. One assassin hell-bent on killing a tyrant, as he charged the 16th president of the United States. And in one moment, our nation was forever changed. This is the most dramatic and resonant crime in American history: the true story of the killing of Abraham Lincoln. National Geographic Channel's first-ever docudrama, Killing Lincoln, combines re-creations with historical insight in a thrilling chronicle of the final days of President Lincoln.