I've liked the first two eps so far but kind of wish they were just hour long episodes and focused more on individual cases. The bigger picture stuff doesn't play as well IMO and some of the twists are a little much.
Cumberbatch and Freeman are doing great work and I hope Amanda Abbington (Mary) finally gets a bump from this show. Maybe she wants to keep working in the UK but would love to see her get a shot at something bigger stateside.