All six episodes from the first season of the British historical drama based on the novel by Julian Fellowes. Set in 1815, two days before the Battle of Waterloo, the Duchess of Richmond (Diana Kent) hosts her annual ball in Brussels. At the ball, James and Anne Trenchard (Philip Glenister and Tamsin Greig)'s daughter Sophia (Emily Reid) catches the eye of Edmund Bellasis (Jeremy Neumark Jones), son of the Earl and Countess of Brockenhurst (Tom Wilkinson and Harriet Walter). 25 years later, after lives have moved on, secrets are revealed that threaten to jeopardise the life the Trenchard's have built in Belgravia.