After chatting with Heisenberg at a cocktail party , Berg concluded that the Germans were a long way behind the Allied effort .
Furman sent the spy Moe Berg to Switzerland to meet the head of the German project , Werner Heisenberg .
After chatting with Werner Heisenberg at a cocktail party , Berg concluded that the German were a long way behind the Allied effort .
Furman sent the spy Moe Berg to Switzerland to meet the head of the German project , Werner Heisenberg .