Sherlock‘s fourth season came to an explosive end last week – and might just have taken the whole show with it. The episode, suitably titled “The Final Problem,” endeavoured to wrap up every lingering plot thread the series had created and act as a possible end to the show, in the event that Benedict Cumberbatch and Martin Freeman’s busy schedules – basically doing lots of Marvel movies – means that they’re not free to do Sherlock again.
Perhaps in its haste to give the series an action-packed finale, the episode did leave us with a lot of questions after it was done. While it was certainly a tense and thrilling ride, you have to admit that it had a lot of plot holes and elements that didn’t quite add up.
And so, on that note, here are 9 things that we’re left scratching our heads about after watching the Sherlock finale. Obviously, a full spoiler warning is in effect here if you haven’t yet caught up. If you have though, read on!