10 Things You May Not Have Known About Sherlock Season 3

1. Amanda Abbington, who plays John Watson’s new wife, Mary, in the series, is actually Martin Freeman’s long-time partner.

John and Mary Watson Sherlock TV

2. And the nice elderly couple in The Empty Hearse who turned out to be Sherlock’s parents? Well, they are actually Benedict Cumberbatch’s parents.


3. The code used to activate the bomb in The Empty Hearse is simply 0-5-1-1-1-3, as in 05/11/13, as in the 5th of November. Remember, remember?


4. In the scene where Mary reads off John’s blog in The Empty Hearse, she’s actually reading off a line from the second Sherlock Holmes novel by Sir Arthur Conan Doyle, The Sign of the Four, word for word.


5. John and Mary’s wedding scenes in the second episode, The Sign of Three, were shot in different locations in Bristol, including:

The Orangery at Goldney Hall


And St Mary’s Church in Sneyd Park


6. The episode The Sign of Three revolved around John and Mary’s wedding and the mystery of Major James Sholto. But the original novel the episode was based off, The Sign of the Four, never featured John and Mary’s wedding, but detailed their meeting for the first time and the eventual wedding proposal.

major james sholto who is he

7. In fact, John and Mary get married “off-camera” in the novels, but showrunner Steven Moffat felt that having Sherlock play bestman for a day would’ve been too good an opportunity to pass up on – a thought Moffat had when he was just 12 years old.

Sherlock lets play murder

8. In the third episode, His Last Vow, Mary Watson’s real initials are revealed to be “A.G.RA” – a reference to The Sign Of Four, the original novel Mary first appeared in, where something called the Agra Treasure was central to the storyline.


9. Despite his amazing portrayal of Charles Augustus Magnussen, the powerful and, honestly, downright terrifying main antagonist of season 3, Danish actor Lars Mikkelsen was actually a street performer for a few years before his career took off, travelling around Europe juggling and miming for tips.

Charles Augustus Magnussen can i flick it sherlock

10. If you were a little confused by the whole crazed Sherlock fan (Philip Anderson played by Jonathan Aris) thing in The Empty Hearse, it might have been because you missed the mini-episode BBC One released on Youtube on Christmas Eve.

Titled Many Happy Returns, the mini-episode was meant to be a prequel to season 3, and is every bit as amazing as a regular-sized Sherlock episode ^^

Watch it here:


Thanks for reading! If you enjoyed this post, you may also enjoy: 32 Bizarre Superstitions and Old Wives’ Tales in Singapore, 26 Unforgettable Things That Happened in Popular Culture in 201320 Signs You Really, Really Hate People.

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