It was the biggest escape in the history of the Berlin Wall: in one historic night of October 1964, 57 East-Berliners try their luck through a tunnel into West Berlin. Just before the last few reach the other side, the East German border guards notice the escape and open fire. Remarkably, all the refugees and their escape agents make it out of the tunnel unscathed, but one border guard is dead: 21-year-old officer Egon Schultz.