This series gets better every time you view it. I first watched it on the BBC website, but it was eminently better once it was on HBO and I could really see it clearly and hear it. Benedict Cumberbatch's performance is subtle and powerful; he portrays myriad emotions by simply moving his lower lip. Rebecca Hall as Sylvia, his wife, infuriates and inspires at the same time. The comment on social classes and war is a fantastic layer to the already beautiful love story.