Each episode of this series is like its own movie, with its own world. Every character, even the minor ones like Mrs Hudson and Molly are very well written and acted. The Sherlock Holmes and Dr. Watson characters are hilariously the polar opposites of each other but complement each other so damn well. Excellent chemistry between all of the cast and you can tell how much they enjoyed making this. The one thing that left me a tad bit disappointed though was the series finale. It's a great episode on its own but a middling close to a show that is so grand and spectacular. Nonetheless an essential and a must watch for anyone who appreciates crime or television in general.