Sherlock: A Scandal in Belgravia Part 1

Fresh from confronting Moriarty in the end of , Sherlock Holmes (Benedict Cumberbatch) and John Watson (Martin Freeman) are called to save the royal family from blackmail at the hands of Irene Adler (Lara Pulver), 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.