Sherlock series four trailer
Sherlock series four isn't going to air on the BBC until 2017 (likely the usual start of January) but fans have already gotten a taste of what the next three episodes will bring. And after the lighter humour of series three, things are looking particularly dark for Sherlock and Watson this time round.
The trailer continues to tease whether Moriarty has actually returned from the grave or whether someone else is masterminding the latest events. It's our first glimpse at Toby Jones as the latest big villain and suggests there are some secrets from Sherlock and Mycroft's past that are about to be exposed.
Are you excited for more Sherlock?