Thanks to some brilliant detective work over the past several months from the folks over at Sherlockology, looks like the door is cracked open to where we can take a peek behind the front door of 221B Baker Street and hear some brilliant first-person narrative from a source at the scene.

In between some well-deserved breaks at Speedy’s Sandwich Shop, Sherlockology has put together the definitive series 2 filming update tracking the latest production timelines, cast and crew information and some much-anticipated, albeit unwelcome, news of PBS broadcast transmission information in the U.S. for those of us on this side of the pond needing a Sherlock fix. Huge thanks as we have now been able to put off our Sherlock support group for another day, another time.

Not enough for you? Come back tomorrow for more Sherlock 2 updates and some very cool behind-the-scenes photos (like the one at the left of a slightly ajar 221B Baker Street) from Cumberbatchweb, another brilliant on the scene detective also taking a well-deserved break from Speedy’s where they are quick to mention that, “the portions are absolutely ginormous”….a word that translates the same no matter where you are.

From Sherlockology tumblr page…..

We’ve had much communication over the past few days over what is occurring with filming on the second series of Sherlock. Now, we don’t have an inside line, but with a healthy spot of deduction and a dash of our own speculation, we’ve pieced together the following guide of what has occurred thus far on the production. The episodes are presented in the order they are being filmed, with the code at the beginning denoting their broadcast order.

Broadcast is expected in the UK in late October 2011, with the U.S. now set for May 2012.

S2E2 – The Hounds of Baskerville

– Filming commenced Monday 16 May 2011. Completed Friday 10 June 2011, after 22 days filming.

– No filming in London seems to have occurred for this episode, taking place in small villages, a former gas works, the countryside around Cardiff, and apparently on Dartmoor. The last two days were spent on the 221B interior set at the BBC studios in Cardiff.

– The episode moved to editing on Monday 13 June, and post production will continue as S2E3 films.

Main Cast:
Benedict Cumberbatch – Sherlock Holmes
Martin Freeman – Dr. John Watson

Guest Cast:
Russell Tovey – Henry Baskerville
Sasha Behar – Dr Louise Mortimer
Simon Paisley Day – Barrymore
Rosalind Knight – Grace
Stephen Wright – Fletcher
Will Sharpe – Lyons
Gordon Kennedy – unknown

Crew:
Paul McGuigan – Director
Mark Gatiss – Writer

S2E3 – The Reichenbach Fall

– Filming commenced Monday 20 June 2011 on the 221B interior set at the BBC Studios in Cardiff, followed by several days at historic sites including Newport Cemetery, Cardiff Castle, Tredegar House, and Cardiff City Hall, as well as other areas around Cardiff including Broadway and Cardiff Bay.

– Production moved to London, taking in the redressed North Gower Street for Baker Street exteriors, as well as other locations around the city including two days at Smithfield Market.

– Principal photography completed on the evening of Sunday July 17 2011 after another 22 days filming.

– Post production will proceed as S2E1 films.

Main Cast:
Benedict Cumberbatch – Sherlock Holmes
Martin Freeman – Dr. John Watson

Recurring Cast:
Mark Gatiss – Mycroft Holmes
Andrew Scott – Jim Moriarty
Rupert Graves – D.I. Lestrade
Vinette Robinson – Sgt Sally Donovan
Louise Brealey – Molly Hooper
Una Stubbs – Mrs. Hudson
Zoe Telford – Sarah
Jonathan Aris – Anderson

Guest Cast:
Peter Basham – Reporter
Jaye Griffiths – Prosecuting Barrister
Ian Hallard – Defence Barrister
Edward Holtom – Max Bruhl
Christopher Hunter – Prison Governor
James Lawrence – School Teacher
Paul Leonard – Bank Director
Michael Mueller – Father
Katherine Parkinson – Kitty Reilly
Malcolm Rennie – Judge
Tony Way – Unknown

Crew:
Toby Haynes – Director
Stephen Thompson- Writer

S2E1 – A Scandal in Belgravia

– Filming commenced on Monday 25 July on the 221B set at the BBC Studios in Cardiff. Filming will proceed for a similar timeframe of just over 20 days.

– Post production may occur from mid to late August into September.

Main Cast:
Benedict Cumberbatch – Sherlock Holmes
Martin Freeman – Dr. John Watson

Recurring Cast:
Mark Gatiss – Mycroft Holmes
Andrew Scott – Jim Moriarty
Rupert Graves – D.I. Lestrade
Vinette Robinson – Sgt Sally Donovan
Louise Brealey – Molly Hooper
Una Stubbs – Mrs. Hudson (unconfirmed but likely)
Zoe Telford – Sarah (unconfirmed but likely)
Jonathan Aris – Anderson (unconfirmed but likely)

Guest Cast:
Unknown – Irene Adler
Richard Cunningham – Mr Wickes
Nigel Ipinson-Fleming – Policeman
Nathan Harmer – Phil
Rosemary Smith – ‘Large Woman’

Crew:
Paul McGuigan – Director
Steven Moffat – Writer

Thanks to Sherlockology for sharing their brilliant, definitely not so elementary, deductions. Though, we still want to know who plays Irene Adler….