Top secret MI5 files detailing first-hand accounts of confessions of three of Britain's most notorious double agents ...
Five Cambridge University graduates served as double agents, leaking highly classified information to the Soviet Union ...
Notorious double agent Anthony Blunt feared that his KGB handler would turn violent when he refused to join his fellow spies ...
Philby and Blunt were, along with Guy Burgess, Donald Maclean and John Cairncross, part of the "Ring of Five" - former Cambridge University students who passed information to the Soviets from the ...