Sherlock goes up against the notorious blackmailer Charles Augustus Magnussen.
The end to another season, and the beginning of another long wait for more episodes. The whole sequence with Sherlock getting shot and using his mind palace to try and stay alive is brilliant. The Mary reveal was kind of shocking. They did a good job making you hate Charles Augustus Magnussen, but I didn't feel that he was great villain, though how can you top Moriarty?