Who Has Buried the Dead?: From Stalin to Putin . The last great secret of World War Two

The Second World War was fought not only on the front lines but also in secrets, some of which have never been revealed. One such secret was buried in the deep, dark forest of Katyn, Poland. The other in the pages of a notebook hidden in an otherwise unremarkable café in an ancient Polish city.

That notebook, known as the Scottish Book, was an obscure work of intellectual gamesmanship between a specialized group of mathematicians who met at a local pub near the town’s medieval university, w...