The first pictures from the upcoming season of Sherlock have arrived – and it looks as if there is a new addition to the ranks.

The fourth series of the BBC show is due to begin in the New Year and finds the mercurial Sherlock Holmes (Benedict Cumberbatch) back once more on British soil. At the same time, Doctor Watson (Martin Freeman) and his wife Mary (Amanda Abbington) prepare for their biggest challenge yet: becoming parents.

Creators Steven Moffat and Mark Gatiss promise that “ghosts of the past” will return in the new season, while Toby Jones will be one of this series’ guest villains.

We can’t wait…