As "Sherlock" season 3 finishes filming this month, a teaser trailer for season 3 has been unveiled after last night's re-run of "The Reichenbach Fall." Combined with the slew of set photos since "Sherlock" season 3 began filming, and there is a great abundance to look at and analyze before the season 3 premiere. So, with so many great visual from the teaser trailer and set photos, here is a gallery of "Sherlock" season 3.