Cologne, November 7, 1912: Dr. The time before dark in a park. Shortly after 8 o'clock he calls Frau Leborius under a false name to lure her to the post office under a pretext. On the way, she picks up her daughter Leonie from friends. As the two walk through the park, they heard a shot. Frau Leborius sags to the ground and is dead.