Downton Abbey - A Celebration: The Official Companion to All Six Series

A Year in the Life of Downton Abbey (companion to series 5)

The Wit and Wisdom of Downton Abbey

The Mitford Trial: Unity Mitford and the killing on the cruise ship

The Mitford Murders: Nancy Mitford and the murder of Florence Nightingale Shore

The Mitford Affair: Pamela Mitford and the treasure hunt murder

The Best Friend

The Mitford Secret: Deborah Mitford and the Chatsworth mystery

The Mitford Scandal: Diana Mitford and a death at the party

The Mitford Vanishing: Jessica Mitford and the case of the disappearing sister

The Mitford Murders Collection: Six sisters, six incredible mysteries - the complete series

The Chronicles of Downton Abbey (Official Series 3 TV tie-in)