As A Thread Unravels

In 1930s action takes place in Detroit (Kana Bureau).

The main scene of action is Russia: St. Petersburg in 1918 and nowadays, prewar and postwar Leningrad before it has been renamed in St. Petersburg, Zvenigorod, near Moscow in 1920-1925.

Military actions during the Great Patriotic War in 1944 occur on the Baltic front near the town of Vitebsk.

Imprisoning of Catherine and Lidia takes place in Arkhangelsk region Vorkuta Vorkutpechlag village in 1940 -1955 years.