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 images 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?
The deductions that Sherlock makes about the man with the large hands and the Japanese tattoo is similar to the deductions Sherlock Holmes makes in the original Arthur Conan Doyle story "The Red-Headed League". See more
About 5 min into the episode, Dr Watson is seen typing his blog. In the shot, it is clearly visible that the blog we see on the screen, the one he's typing, is actually an image of it opened in Windows Photos app. See more
If you ever think I'm becoming full of myself, overconfident or cocky, would you just say the word "Norberry" to me, would you?
Just that. I'd be very grateful.
Right after the end credits Mary's video cuts back and Mary says "Go to hell, Sherlock". See more
References The Exorcist
Sherlock Theme Song
Performed by David Arnold
and Michael Price See more