Wanted to like this as I've enjoyed the writer's Agatha Christie adaptations in recent years and I'm a big fan of both Claire Foy and Paul Bettany. The acting and cast were very good but for me the story would have worked better if an older actress had played the Duchess (She was in her 50's at time of the trial.)
It was stylish all round, well written and fashionably directed and photographed, soundtrack was a bit patchy with some anachronistic tunes.
My main problem was that both characters were entitled dislikeable aristocrats, he was obviously a rotter, but she wasn't much better. In the end I wasn't that bothered what happened to either of them, so for me a slightly disappointed 6/10.
Perhaps its time to put the British Aristocracy back in the cupboard and tell some new and untold original stories about ordinary Britain's past and present. Brideshead still gets revisited a little too often.