Berlin, 1939. An American tourist walks into the bar of the Adlon Hotel and offers, while under the influence, to bet that Germany and Russia will make common cause against Poland in the near future. The locals don't buy such an outlandish prediction and eagerly accept his wager. Later that evening, the news comes over the radio that Germany and the USSR have just signed a nonaggression pact. Six years later, Professor Harry Gordon is still gambling,...