Ksenia Polunina (3rd right, wearing brown coat) visits her childhood apartment building in Moscow as a plaque memorializing her father is hung there. Her father Sergei Polunin was a scientist who was taken away from this building on a February night in 1938 — and then shot by Josef Stalin’s secret police.

Ksenia Polunina (3rd right, wearing brown coat) visits her childhood apartment building in Moscow as a plaque memorializing her father is hung there. Her father Sergei Polunin was a scientist who was taken away from this building on a February night in 1938 — and then shot by Josef Stalin’s secret polic