Imprisoned by the Nazis in the Lodz ghetto and several concentration camps, he survived the Holocaust and joined the Czechoslovak Communist Party, working as an economist. The 1952 show trial involved the Communist Party General Secretary, Rudolf Slánský, and his thirteen co-defendants. They were arrested, unjustly accused, tried, and executed as traitors and western spies. The trial was orchestrated by Soviet advisors, sent to Prague by Soviet premier Joseph Stalin, and assisted by Czechoslovak Secret Service interrogators and the members of Czechoslovak Communist Party Central Committee. The destruction of the Czechoslovak Communist high-ranking party officials by their own colleagues has defied attempts to rationalize it, and our understanding of the affair remains superficial. One of the people who were thrown into the alleged conspiracy was Dr Rudolf Margolius.