Sworn to Secrecy: Secrets of War

Season 1, Episode 7

Episode Title: Stalin's Spies

Overview:

The Kremlin operatives who were loyal to one man... a paranoid dictator who spied as intensely on his Allies as he did on his enemies. Features exclusive interviews with former NKVD intelligence officers and other eyewitnesses to the most ruthless dictator of the 20th century.