Sherlock: A Scandal in Belgravia Part 2

England has been brought to its knees by a dominatrix. In the palm of her hand, Irene Adler holds the key to an international incident, and Sherlock may be the only one who can unlock it. But when the phone is delivered to Baker Street, and Irene appears in St. Bart's morgue, the usually stoic Sherlock Holmes appears to be too late...