When did the double agent who was recruited by Arnold Deutsch defect to the Soviet Union ?
Arnold Deutsch Arnold Deutsch (1903–1942?), variously described as Austrian, Czech or Hungarian, was an academic who worked as a Soviet spy, best known for having recruited Kim Philby. Much of his life remains unknown or disputed.
Sergei Ogoltsov Sergei Ivanovich Ogoltsov ("Сергей Иванович Огольцов" in Russian; August 29, 1900 – October 26, 1976) was a Russian member of the Soviet NKVD from 1936 until it was reorganized as the MGB in 1946. He served in the MGB until his arrest in 1953. He was the Deputy Director of State Security (MGB) from July 14, 1951 to August 9, 1951. By the time he was arrested in 1953 he had risen to the rank of Lieutenant General in the NKVD. He was released from prison in 1953 after a short arrest and he retired from the MGB. He died in 1976.