After seeing first Sherlock movie and rather liking it, I was expecting a lot from the sequel. Maybe that's why it didn't live up to what I hoped I would see, but was enjoyable movie nonetheless.
Most of the old cast is back and stellar as always, even more slow motion scenes make appearance, which only helps flesh out amazing physics we can't usually catch with naked eye and story while not as twisted as in the first one, keeps you on the edge nonetheless.
All in all, if you liked first movie, you will definitely like this one as well. It might not be as great, but it definitely is worth watching!