It's four days until the first of three 90 minute TV movies that make up series 2 of Sherlock, so here's a complete round up of synopses, videos and trailers for episode 1, A Scandal in Belgravia:
In episode one of this new series, compromising photographs and a case of blackmail threaten the very heart of the British establishment but, for Sherlock and John, the game is on in more ways than one as they find themselves battling international terrorism, rogue CIA agents and a secret conspiracy involving the British government. But this case will cast a darker shadow over their lives than they could ever imagine, as the great detective begins a long duel of wits with an antagonist as cold and ruthless and brilliant as himself: to Sherlock Holmes, Irene Adler will always be THE woman.
Sherlock Holmes - Benedict Cumberbatch
Dr John Watson - Martin Freeman
Mrs Hudson - Una Stubbs
DI Lestrade - Rupert Graves
Mycroft Holmes - Mark Gatiss
Jim Moriarty - Andrew Scott
Molly Hooper - Louise Brealey
Irene Adler - Lara Pulver
Q & A from the screening
Sherlock: A Scandal in Belgravia airs on New Year's Day, at 8.10pm on BBC One.
The What We Know for episode 2, The Hounds of Baskerville, will be posted on Thursday January 5.