Jones will star in the second episode, directed by Nick Hurran.
The first of the three feature-length episodes will be directed by Rachel Talalay.
The verdict on the New Year special.
Latest trailer for the special.
Story details for the New Year’s Day special.
UPDATED: Sherlock and Watson are back on BBC1 New Year’s Day.
Updated with full trailer.
Video preview for the upcoming special.
Latest image for the special.
Steven Moffat confirms “The special is its own thing”.
Benedict Cumberbatch (Small Island, Starter For Ten) and Martin Freeman (The Office, Hitchhiker’s Guide To The Galaxy) star in Sherlock, a thrilling, fast-paced update of Arthur Conan Doyle’s classic detective, set in present-day London, for BBC One.
Sherlock is co-created by the hugely talented partnership of Steven Moffat (Doctor Who, Coupling) and Mark Gatiss (The League Of Gentlemen, Crooked House, Doctor Who) and produced by Sue Vertue (Coupling, The Cup).
In this unique adaptation, the iconic details from Conan Doyle’s original books remain. They live at the same address, are only interested in the bizarre and, somewhere out there, Moriarty is waiting for them.
Sherlock also stars Rupert Graves (God On Trial, Midnight Man) as Detective Inspector Lestrade, Scotland Yard’s finest, largely because Sherlock allows him to take credit for his deductions, and Una Stubbs (EastEnders, The Catherine Tate Show) as Mrs Hudson, their long-suffering housekeeper.