It's 1941, and the Mitford household is splintered by the vicissitudes of war. To bring the clan together - maybe for one last time - Deborah invites them to Chatsworth for Christmas, along with a selection of society's most impressive and glamorous guests, as well as old family friend Louisa Cannon, a private detective. The final, sixth whodunnit in the much-acclaimed "The Mitford Murders" series.