MI5

Joseph Katz and the Soviet Shadow over Washington

Kept in the files of the UK Security Service, the record of a man who supervised Soviet espionage in the US capital for twenty years remains partially stripped of its most sensitive names.

By Harlan Pryce ·

Eugene Pik and the Double Game for Tokyo

A man of six aliases spent decades selling state secrets to a revolving door of empires, yet the British Security Service kept his operational history a skeletal secret.

By Constance Bell ·

Boris Bykov and the 1937 Mapping of the NKVD

Kept in a personal file in London, the record of a Soviet spymaster in the United States tracks a man who likely vanished during the Great Purge

By Constance Bell ·

SNIPER and the 1942 Price of a Belgian Turn

A Belgian airman’s decision to betray his German handlers upon landing in Britain is preserved in a summary record that omits the brutality of his vetting and the utility of his silence

By Vera Kessler ·