In 1930s Britain, Nancy Mitford (Bessie Carter) wasn't yet a woman of letters, but the privileged daughter of a peer. As the clouds of war gathered, the extremes across the political spectrum-as well as the lovers and friends-embraced by sisters Pamela (Isobel Jesper Jones), Diana (Joanna Vanderham), Unity (Shannon Watson), Jessica (Zoe Brough), and Deborah (Orla Hill)-would stun polite society. Remarkable miniseries co-stars James Purefoy, Anna Chancellor, Toby Regbo, Joshua Sasse. 4 1/2 hrs. Widescreen; Soundtrack: English.