The novel is set in 1939 during the Stalinist Great Purge and Moscow show trials. Despite being based on real events, the novel does not name either Russia or the Soviets, and tends to use generic terms to describe people and organizations: for example the Soviet government is referred to as "the Party" and Nazi Germany is referred to as "the Dictatorship". Joseph Stalin is represented by "Number One", a menacing dictator. The novel expresses the author's disillusionment with the Bolshevik ideology of the Soviet Union at the outset of World War II.