Sherlock Season 2 Review

So, I just finished season 2 of Sherlock. Was pretty impressed with Benedict Cumberbatch's portrayal of the famous detective. My thoughts on a Scandal in Belgravia,it was interesting,and confusing. Irene Adler was an interesting character, and in the end, I wasn't surprised that she was working for Moriarty. The Hounds of Baskerville was interesting. I actually wasn't expecting the hound to be a drug induced hallucination, that was given to them by the fog. I will say that the end of The Riechenbach Fall did have me a bit confused, seeing as they clearly showed Sherlock jump off of the hospital, yet he's very much alive. Also, how can Moriarty be dead, when he is Sherlock's main rival. I can't wait to see how they take this in season 3.