The game is (still) afoot, and to prove it, BBC has dropped a new trailer for the fourth season of the global hit Sherlock. Coming off the tumultuous events of Season 3 (and the 2016 holiday special The Abominable Bride), Season 4 looks to test the world’s first consulting detective and his friends like never before, with new main villain Toby Jones looking especially menacing in the footage so far released.