I missed this when it was on TV but was glad to find it in store for cheap. I didn't expect it to fit in with the rest of the series as well as it does. It's got a little more spookems going on (as I like to call it) than most Sherlock episodes. It's a little Scoobie Doo, but seeing as it's Sherlock and we understand his role is to figure things out we can assume he won't be doing it through a seance. Well, at least not in this series. It's a fun time, it illucidates a few things about previous episodes and opens up the possibilities for seeing Moriarti in future episodes, too.