Granted, unlike in the book there are a few, relatively brief action sequences, though nothing along the lines of Guy Ritchie's Sherlock Holmes movies. But if you enjoyed those, you very well might like this movie as well. It does contain a bit more of an ethical dilemma for the detective, which was handled well enough, and if there is a second movie, as is teased at just before the credits, I'll quite gladly watch that one too.
(Note: there is absolutely no anachronistic music in the movie, unlike the trailer, but this one gives at least a little taste of what it looks like.)