Adolf Hitler was a madman bent on destroying nations, enemies and millions of innocent people. It's surprising, then, that he was able to retain power until the final days of the Second World War. It wasn't until 1944, and after the tide of war had turned against the Germans, that some military leaders began to plot his overthrow. Led by Claus von Stauffenberg, military leaders in the west plotted under the code name Valkyrie to assassinate Hitler. Because of a last-minute change of the venue from an underground bunker to an above-ground boardroom, the bomb von Stauffenberg placed under the table failed to kill Hitler...