Suite Française ★★½

Given the extremely strong cast (Michelle Williams, Kristen Scott Thomas, Matthias Schoenaerts, Ruth Wilson, Clare Holman) I was expecting something a lot darker. Don't get me wrong, this isn't fluffy, but it's just a lot more ... well ... bland than I had been anticipating.
More to do with my expectations than the film, I think. Anyone else think Margot Robbie was strange casting though?