It's still months away from the start of next season, but viewers are already trying to guess what the future holds for Benedict Cumberbatch and Martin Freeman as Sherlock and Dr John Watson.
In the snap, which was posted on the official Sherlock Twitter page, the two men look very suave indeed.
Benedict, 40, is dressed in a dark grey suit as he stares down the camera lens with a concerned look on his face. Martin, 44, is standing next to him wearing a check shirt but looks away from the camera with his arms folded.
The caption alongside the picture reads: “The boys will be back soon! Here’s the first official picture of Sherlock and John from #Sherlock Series 4.”
Eagle-eyed viewers believe there may be a deeper meaning to the teaser photo and are already speculating from the clues.
