Sherlock waits to see where Moriarty will make his posthumous move. One mysterious case in particular baffles Scotland Yard but Sherlock is more interested in a seemingly trivial detail. Why is someone destroying busts of the late Prime Minister Margaret Thatcher? Is there a madman on the loose, or is there a much darker purpose at work, something with its roots deep in Mary Watson's past?
Did You Know?
When Mary is in Norway, two boats can be seen with the names "Flekkete Bånd" and "Løvens Manke". These names both reference, and are direct translations of "the speckled band" and "the lion's mane", two well known tales of Sherlock Holmes. See more
As a doctor John Watson would have immediately placed Mary flat on the ground and placed pressure on the wound. He would not have just left her propped at an awkward angle and done nothing as she bled out. See more
What you're about to see is classified beyond top secret. Is that quite clear? Don't minute any of this. Once beyond these walls, you must never speak of it. A D-notice has been slapped on the entire incident. Only those within this room, code-names Antarctica, Langdale, Porlock and Love, will ever know the whole truth. As far as everyone else is concerned, going to the Prime Minister and way beyond, Charles Augustus...
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During the end credits, several letters are colored red. When read sequentially, they spell out "The Six Napoleons", the title of the Arthur Conan Doyle story that this episode is loosely based around. See more
Sherlock Theme Song
Performed by David Arnold
and Michael Price See more