Answer
The majority of Andrei Chikatilo's gruesome crimes occurred during the reign of Leonid Brezhnev, who held the position of General Secretary of the Communist Party of the Soviet Union from 1964 until 1982. It is estimated that Chikatilo committed around 52 out of his total 56 known murders during Brezhnev's era, leaving behind a trail of terror and sorrow in the Soviet Union.