Adapting the episodes of the smash-hit TV series starring worldwide superstars Benedict Cumberbatch (Doctor Strange) and Martin Freeman (The Hobbit).

Fresh from confronting Moriarty in the end of The Great Game, Sherlock Holmesand John Watson are called to save the royal family from blackmail at the hands of Irene Adler, a dominatrix known as "The Woman". Adler pulls Sherlock into a complex web of mysteries involving the CIA and the MoD, with secrets that could threaten to threaten international security and topple the monarchy.