Genrikh Grigoryevich Yagoda was a Soviet politician who served as the People's Commissar for Internal Affairs from 1934 to 1936, during which time he oversaw the Great Purge. He was a close ally of Joseph Stalin, but was eventually arrested and executed in 1938.
The Untold Story of Genrikh Yagoda: Unmasking the Secrets of the Soviet Secret Police