When did the double agent who was recruited by Arnold Deutsch defect to the Soviet Union ?
Kim Philby Harold Adrian Russell "Kim" Philby (1 January 1912 – 11 May 1988) was a high-ranking member of British intelligence who worked as a double agent before defecting to the Soviet Union in 1963. He served as both an NKVD and KGB operative.
Yan Chernyak Yan Chernyak (6 April 1909 – 19 February 1995) was a World War II era spy who led a network of several dozen people in Nazi Germany working for the Soviet Union's military intelligence GRU. He was nicknamed "man without a shadow" for his ability to move around undetected.