It's a little bit like Law and Order: Georgian England, with Andrew Buchan in the lead role, and is basically about William Garrow, a real historical figure, and how he changed how the accused were defended in court. He's the guy who first introduced "innocent until proven guilty."
It's a British series, so as usual I highly enjoyed the cast and their acting. Also, there are some awesome costumes.
Earlier this week, I watched the final episode of Sherlock: Season One. I did not realize it was a cliffhanger. No wonder there is so much fanfic.