Five chocolates with clues and the sixth with skull and crossbones. In December, John and Sherlock go after a murdering Santa Claus.

Fear was never Sherlock's problem, but now he has lost control. The only things that keep him going are two people who help him and a ghost story.

From The Sign of Three: Sherlock (OS): '… and of course there was the elephant in the room.' Elephant (OS): 'TOOOT'. What would the case of the elephant in the room have looked like? A client comes to Sherlock and John with an unusual problem.

Five friends died of natural causes at almost the exact same time at Christmas and of course it's only a matter of time until Sherlock Holmes gets involved. However, by pursuing this cold case, he finds himself going against the most powerful man in Britain. A man who would sacrifice anything.

Post Reichenbach one-off. Mycroft tries to arrange Sherlock's funeral. Sherlock tries to make Mycroft's life difficult.

After the events in series three, Sherlock is faced with a new riddle: how can a man rise from the grave? In the mean time, a judge is killed, and Mary gets a strange visitor. A professional gambler seems to know the answer. Spoilers for series three and heavy speculation on series four. Part one of my own series four, pastiche. Will be eight chapters.