December 1938, and storm clouds hover once again over Europe. Josephine Tey and Archie Penrose gather with friends for a Cornish Christmas, but two strange and brutal deaths on St. Michael's Mount--and the unexpected arrival of a world famous film star, in need of sanctuary--interrupt the festivities. Cut off by the sea and a relentless blizzard, the hunt for a murderer begins.

Pivoting on a real moment in history, the ninth novel in the Josephine Tey series draws on all the much-loved conventions of the Golden Age Christmas mystery, while giving them the contemporary twist which has come to distinguish the books so far.