If there's one thing that the Sherlock writers enjoy more than anything else, it's a mind-blowing plot twist to make their audience shout at the television, very loudly. Series 3 was no different, with Moffat and Gatiss revealing in the dying seconds of 'His Last Vow' that actually, Jim Moriarty, the lunatic himself, is alive and well. It's a cliffhanger that's left so many questions about the future of the show and generated a heap more hype to keep the fans talking about Sherlock, and the genius is that it's such a simple twist; it's literally the same one they pulled just a series prior, too. It certainly leaves the Sherlockians thinking. Fandoms are like the oceans - the deeper you go, the darker they get - and in the case of the Sherlock fandom, the more we wait, the weirder our theories become. Here are ten of the bizarrest, but actually vaguely plausible ideas that the fans have had since the end of Series 3, that would utterly revolutionise the show again.
10. Janine Is Moriarty's Sister
In the last couple of episodes, it seemed like we were seeing a more human side to the sociopathic Sherlock; he got himself a girlfriend, was going to propose to her and then, no, wait, it was all a plan to get into a criminal mastermind's office. But why would someone of Magnussen's magnitude hire Janine? She's just his PA, you might say. Well then why did he hint to John that he'd blackmailed her as well? Perhaps she has secrets, maybe of Sherlock, but perhaps of somebody else that we already know? Well, Jim Moriarty is another character who's Irish, dark-haired, dark-eyed and charismatic; he's also obsessed with Sherlock, and also utterly unsurprised and unemotional over his deceiving. If Janine was to be Moriarty's sister, it would mean that he had much more of a presence in Series 3 than we thought, not to mention the jibes that Sherlock could make to him about his relationship with her. It's a far-fetched idea, admittedly based on the fact that these are the only two Irish characters in the entire show, but it would certainly add fuel to the already-fiery relationship between Sherlock and his arch-nemesis.