If you missed Sherlock: The Abominable Bride when it aired on PBS’s Masterpiece, never fear: the full program plus bonus features is now available in the Amazon Instant Video Store, priced at $11.99 to own in SD / $14.99 in HD. From IMDB:
Imagining himself back in the 1890s Sherlock is visited by Inspector Lestrade, after newly-wed Emelia Ricoletti, having apparently killed herself in public, murdered her husband Thomas in front of witnesses before vanishing. Some months later Holmes is approached by Lady Carmichael, who tells him that her husband Sir Eustace has been threatened by Emelia, who then, seemingly does away with him. With an intrusive Moriarty crossing him Holmes attempts to solve the enigma, with unexpected help from Watson’s wife Mary and evidence of a conspiracy involving half the population of the country. – Written by don @ minifie-1
All three seasons of Sherlock are also currently available to own in Instant Video format. Each season includes three 1.5 hour episodes plus behind-the-scenes bonus materials.