Career
Between 1939 and 1945 he was imprisoned in Buchenwald concentration camp. In 1952 he was expelled from the party. He was subsequently arrested and sentenced to death by hanging in the Slánský trial, a show trial orchestrated from Moscow.
Frank is the central character of Howard Brenton"s 1976 play Weapons of Happiness, in which he is imagined not dead, but rather living in exile.