A sci fi 50's gem. Love this movie and the ending is shocking but extremely well done. This is a classic of epic proportions. Peter Graves and a great supporting cast played this out with heart and passion. Herbert Berghof also played a great part of the Russian scientist. Also, Walter Sande a staple in the golden age of TV did an admirable job. The cold war era was played out well as the Soviets were always making threats of burying the US. The pictures of Stalin in the background of the Russian scenes is a stark reminder of the evil we faced at that time. Extremely well done and worth watching.