Most Successful Spies of All Time

https://www.askmen.com/top_10/entertainment/202c_top_10_list.html
https://en.wikipedia.org/wiki/Melita_Norwood
http://allthatsinteresting.com/famous-spies
https://www.theguardian.com/culture/gallery/2013/apr/13/10-best-real-life-spies
https://en.wikipedia.org/wiki/Aldrich_Ames
https://en.wikipedia.org/wiki/Dmitri_Polyakov
https://en.wikipedia.org/wiki/Mata_Hari
https://en.wikipedia.org/wiki/Shi_Pei_Pu
https://en.wikipedia.org/wiki/Klaus_Fuchs
https://zagria.blogspot.com/2010/03/shi-pei-pu-1938-2009-opera-dancersinger.html#.WnLF45DFLIU
https://en.wikipedia.org/wiki/James_Armistead_Lafayette
https://en.wikipedia.org/wiki/Sidney_Reilly
https://www.theguardian.com/uk/2002/sep/07/russia.artsandhumanities