WINNER OF THE MARK LYNTON HISTORY PRIZE 'A gripping reconstruction... utterly compelling reading.' Adam Zamoyski 'This is a grim story, thoroughly researched and brilliantly told.' Geoffrey Alderman, Times Higher Education The Katyn Massacre of 22,000 Polish prisoners of war is a crime to which there are no witnesses. Committed in utmost secrecy in April-May 1940 by the NKVD on the direct...