Episode 1
Why is someone destroying images of Margaret Thatcher? Is there a madman on the loose? Or is there a much darker purpose at work?
Episode 2
Sherlock faces perhaps the most chilling enemy of his long career: the powerful and seemingly unassailable Culverton Smith – a man with a very dark secret indeed.
Episode 3
Holmes and Watson travel to Europe to escape Moriarty's vengeance.
