111 things You Might not Know About Sherlock Season 3

Discarded plots, quotes from canon, Martin Freeman's hatred of Watson's moustache... Here's a long list of Sherlock series 3 trivia...

Released this month, the collector’s edition Sherlock series 3 DVDs are crammed with nerd succour, from the episodes one and three commentaries by Mark Gatiss, Steven Moffat, Sue Vertue, and Una Stubbs, to behind-the-scenes featurettes, falling-over and dancing outtakes, footage from episode read-throughs, a deleted scene in which Lars Mikkelsen licks Benedict Cumberbatch, technical special effects gubbins, clips from the only existing television interview with Sir Arthur Conan Doyle, and – we almost forgot – the series itself.

For Sherlock fans who haven’t yet had the pleasure, we’ve ploughed through all the bonus material on the discs, turning up the odd bit of trivia treasure as we did so. Find out below about Mark Gatiss and Steven Moffat’s plans for Sherlock to teach Mary the violin, Benedict Cumberbatch’s dad trying to embarrass him on set, Martin Freeman learning how to drive, Moffat unwittingly plagiarising series 3 lines from his own Jekyll and Press Gang, Gatiss’ plans for Mycroft’s John Steed-style umbrella, the outrageous idea that Sherlock Holmes should ever wear a different coat, and much more… 

1. In the two years after The Reichenbach Fall, the telephone box outside St Bart’s hospital became a shrine to Sherlock Holmes, and was filled with notes and messages left by fans, all of had to be removed by the production team prior to filming The Empty Hearse.

2. The bungee cord in The Empty Hearse was completely computer generated. The wires attached to Cumberbatch and his stunt double Will Willoughby were digitally removed and replaced by the CG cord.

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3. The shot of Sherlock bursting through the window to kiss Molly was composited from three different shots: a stunt man flying through a sugar glass window against a green screen, a real shot of Cumberbatch jumping through the window frame with fake glass shards sprinkled all over him, and a shot of a real glass window breaking.

4. The real-life Speedy’s Sandwich Bar And Café café around the corner on Gower Lane now does a roaring trade thanks to featuring in the series, according to the wonderful Una Stubbs, whom we presume knows about this kind of thing.

5. All of the supporting extras outside St Bart’s in The Reichenbach Fall were brought back two years later to re-film the fall scenes and dress in the same clothes for The Empty Hearse.

6. According to Steven Moffat, watching them side-by-side, you can tell the difference between the original fall scenes and the newly filmed ones because “Just to point out the mistakes. it’s raining in the new stuff and it’s not raining in the original Reichenbach.” Top tip there.

7. Una Stubbs’ nickname for Rupert Graves is “Mr Gorgeous.”

8. Martin Freeman hated the moustache John Watson wore in The Empty Hearse. Moffat remembers the post-read-through meeting about The Empty Hearse being repeatedly interrupted by Freeman “marching over wearing a different moustache, and say, slightly bad-temperedly, ‘what about this one?’ and we’d say ‘yeah that’s lovely’ and he’d say ‘I don’t like it’ and he’d go storming off again!” “He hated it”, remembers Gatiss. “But I’m a sex symbol”, Gatiss remembers Freeman complaining.

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9. The torture chamber location was in fact the basement of the same building used for The Diogenes Club in series two, The British Academy on Carlton Terrace in London, should you want to visit.

10. The online prequel to series 3, Many Happy Returns, was originally part of The Empty Hearse but cut because its inclusion meant it would have taken too long to see Sherlock in the new episode again.

11. Mark Gatiss thinks they missed a trick in the scene where John visits Baker Street to establish the time of year: “Nobody’s wearing a poppy! And it’s one of the most instantly November-ish things.” Shoddy.

12. They brought in a real wet-shave barber for the scene in which Benedict Cumberbatch is shaved in Mycroft’s office. The scene was a late addition to the episode because The Empty Hearse was coming in too short. The original plan was to see Sherlock for the very first time on the rooftop looking Bond-like across the London skyline.

13. Mycroft’s office, designed by Arwel Jones, was inspired by the world of James Bond, from the globe on the desk to the portrait of HM Elizabeth II, “that particular painting of the Queen is a deliberate Bond nod,” says Gatiss.

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14. While the scripts for series three were all long, The Empty Hearse and The Sign Of Three both underran and needed to be plumped out with additional scenes. Sue Vertue remembers, “The only one that didn’t have time problems I think was Vow, which was about 140 pages, because Lars [Mikkelsen, who played villain Charles Augustus Magnussen] speaks so slowly.”

15. Moffat and Gatiss promise that Mrs Hudson assuming Watson’s new relationship is with a man is “the last hurrah for this joke because it’s getting very boring.” Gatiss says, “There’s a logic problem here in that Mrs Hudson does have plenty of evidence now that John isn’t gay and yet always comes back to the idea that he is. She just wills it to happen.”

16. The restaurant supposedly inside London’s Landmark Hotel is really in Cheltenham. It was tricky finding a large enough swanky restaurant to close down and film this scene in, hence the decision to split the restaurants up and film the scene across multiple, increasingly shabby places.

17. It was in Mark Gatiss’ kitchen, after a group viewing of The Hounds Of Baskerville in January 2012 that Gatiss and Moffat first asked Amanda Abbington if she’d like to play Mary Morstan. Sue Vertue remembers, “Before then we’d done tentative little questions to Martin, like, have you two ever worked together before and how did it go?” Abbington was immediately on board, we’re told.

18. A scene was originally planned between Mary and Sherlock when they first meet that neither Gatiss nor Moffat could make work. Eventually, it was all replaced by one line from Mary in the back of the cab, when she tells John “I like him.” Moffat remembers, “That was it. That was the whole story. It carries a lot of import, it was three endlessly rearranged pages!”

19. Sherlock’s The Final Problem-referencing mention of the Japanese art of Baritsu was a last-minute ADR addition suggested by Mark Gatiss. “I said to Benedict, will you say ‘there’s also a system of Japanese wrestling…’

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20. According to Sue Vertue, Mary Morstan’s line “Well, he would have needed a confidante” is our first hint that the character isn’t exactly who she says she is. “She’s assessing it from her point of view.”

21. We’re told that a potential inclusion in the word cloud Sherlock sees when he makes his first deductions about Mary was “Unresolved Jason Orange crush,” as an attempt to distract people from the word “Liar.” We’d like to see how Sherlock would reach that deduction – perhaps Mary has a Take That tattoo underneath that fur coat…

22. The scene of Sherlock visiting Mrs Hudson for the first time since his ‘death’, Gatiss explains, “is sort of a dramatization of a quote from the original story, The Adventure Of The Empty House: ‘He went back to Baker Street in his own person and threw Mrs Hudson into violent hysterics.’”

23. The scene in which Mary is sat on the bed reading aloud from John’s blog was another late addition. “I love this little scene,” remembers Moffat, “I think it gives us the entire relationship between these two, yet it’s another added scene that [Mark Gatiss] ran off and wrote because there was a set and some time available! We’ve got Martin and Amanda and a set – quickly! Write something! It’s actually one of my favourite scenes in this. It gives such reality to that relationship and it also accounts for the disappearance of the moustache.”

24. The writers were hamstrung somewhat by having announced a three-word tease for the series: Rat, Wedding and Bow. “I wanted to do The Giant Rat Of Sumatra, which is the most famous of the unrecorded adventures” remembers Gatiss, “it went through all kinds of permutations.” “And constant ways of how do we make it a rat?” recalls Moffat, “because we’d promised a rat!”

25. The Great Game originally featured a scene where, Gatiss remembers, “Mycroft refers to something Sherlock did as a child which disintegrated their happy home, revealing that their father was having an affair. We took it out in order to retain the mystery and thank God we did, because we’ve gone so much further with the family explanation.”

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26. When Mrs Hudson drily remarks “I’m sure there’s a crying need for that” about Sherlock’s blog on the varying tensile strengths of different natural fibres, it’s a direct quote from her counterpart in Billy Wilder’s 1970 film The Private Life Of Sherlock Holmes, played by Irene Handl.

27. When Benedict was first cast as Sherlock, his mum told him, “But you haven’t got the right nose.” (Doyle’s original description of the character described Holmes as having an aquiline hawk-like nose, while Sidney Paget’s illustrations showed a Holmes with a long, straight nose.)

28. According to Moffat, Molly’s long, striped scarf is not a deliberate reference to Tom Baker’s Doctor Who costume, “Molly’s got a long scarf, I’ve just realised. Oh my God, the truth is out. I suppose it was inevitable!”

29. It was in the original plan for Sherlock to try out Mrs Hudson, as well as Molly, as a potential assistant in The Empty Hearse, but never came to pass. “She would have said no,” says Una Stubbs.

30. The Empty Hearse scene in which Sherlock deduces the husband is having an affair was originally written and filmed for A Scandal In Belgravia, but cut, then re-filmed with the same actors and included in series three.

31. There are two nods to the Doyle story, A Case Of Identity, in The Empty Hearse. The first is the case of the young woman whose online boyfriend disappeared and was revealed to have been her step-father in disguise, a modern update of the story. The second is Sherlock’s line about the woman pacing around outside that “oscillation on the pavement is always an affair of the heart” (“…always an affaire de coeur” in the original story).

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32. The DVD salesman who visits Watson’s surgery is both a modern version of the bookseller Sherlock Holmes disguises himself as before revealing his identity to Watson in The Adventure Of The Empty House, and a nod to the 1944 Holmes film The Spider Woman, in which Nigel Bruce’s Watson wrongly thinks somebody is Sherlock Holmes in disguise.

33. According to Una Stubbs, sales of wallpaper have gone up since Sherlock started. We don’t have any evidence to support this assertion, but why would Mrs Hudson lie?

34. The Jack the Ripper skeleton room was also located in the basement to the building that stands in for The Diogenes Club (see above).

35. Anderson’s Jack the Ripper set-up was originally going to be the “elephant in the room” gag later used in The Sign Of Three. The team wanted a real elephant for the joke, but the practicalities and cost just didn’t pan out. “There aren’t as many captive elephants around as you think”, sighed Mark Gatiss.

36. Intercutting between the scenes of Sherlock and Molly’s investigation and Watson’s surgery was designed “to sort of put the boys together even though they’re not really together, and to show the vacuum in between.”

37. The story of the missing tube car was “sort of based on a Conan Doyle story which isn’t a Sherlock Holmes story called The Lost Special” recalls Gatiss. Two non-Holmes stories by Conan Doyle, The Lost Special and The Man With The Watches were included in French editions of Sherlock Holmes stories, according to Moffat.

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38. The underground scenes in the trainspotter’s video were filmed at Charing Cross, and the scenes of Sherlock and Watson walking on the tracks were filmed in the disused Aldwych tube station. There is a real unused tube station in London called the Bull & Bush that was built underground but with no top access. Arwel Jones built an entire tube car in which to film the bomb scene at the end of the episode.

39. To keep people guessing about the solution to Sherlock’s fall, they shot a fake scene where Mycroft and Moriarty (wearing Sherlock’s Belstaff coat) come out of St. Bart’s hospital, shake hands and depart. Jeremy Lovering, who directed The Empty Hearse, tried to put that scene in the episode but was overruled.

40. Director Jeremy Lovering once hid inside a bonfire as a child and was rescued at the last minute. That was apparently a coincidence, not an inspiration, for the plot point of John being made into a human Guy.

41. The shot of the little girl facing the bonfire with her back to the camera was taken from the dress rehearsal because the shoot overran and the child actors had to stop work before the scene was finished.

42. The bonfire scene was filmed in Portland Square, Bristol, the same square above which the Doctor parked his TARDIS in the cloud in 2012 Christmas Special The Snowmen.

43. Sherlock’s first real departure from canon is the inclusion of the Holmes parents, played of course by Wanda Ventham and Timothy Carlton. “The exact genetic combination that resulted in Benedict Cumberbatch is sitting right there on that sofa,” says Steven Moffat. Ventham and Carlton weren’t credited in the episode so as to keep their appearance a secret.

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44. The idea of Sherlock going straight to Mrs Hudson’s fridge in A Scandal In Belgravia (after wiping his feet on the mat of course) to take a cake came from Una Stubbs (who, incidentally, thought she was going to be recast after filming the pilot) telling director Paul McGuigan that’s what her sons do when they come to visit her.

45. Mark Gatiss filmed the parts showing the bomb in the suitcase on the hotel room bed.

46. The bomb was originally supposed to be a soviet-era atomic explosive that had been smuggled into the country a long time ago, but they couldn’t get the idea to work.

47. John’s speech to Sherlock while the bomb counts down was inspired by a recurring dream Mark Gatiss used to have as a child about he and his dad driving off a cliff into the sea and his dad turning to him and saying ‘This is it, son’. “The inspiration for John saying ‘this is it’, what do you do in that moment when you know there’s no way out?”

48. The blue crash mattress used in Sherlock’s final, plausible explanation of how he survived the fall is the right size you’d need to survive a fall from that height. They got an expert in to make sure the details were plausible.

49. As many spotted, the plan code name ‘Lazarus’ wasn’t just a reference to the biblical story of Lazarus returning from the dead, but also to the name of Mark Gatiss’ Professor character in Doctor Who episode The Lazarus Experiment.

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50. The scene in which Mycroft asks on the telephone “Is it done? Good” was apparently moved all over the episode, at one point inserted in reference to Watson having shaved his moustache.

51. Actor Jonathan Aris (Anderson) cut his hands badly pulling down the papers from the walls after he expressed his disappointment with Sherlock’s explanation. More hand injury occurred in The Sign Of Three when Sherlock was banging on Major Sholto’s door. 

52. They wanted to film a scene of Mycroft and his parents actually watching Les Miserables, and the theatre was keen to cooperate, but the scheduling wouldn’t work.

53. Ed Birch, the actor who plays Molly’s Sherlock lookalike fiancé in the episode, was originally cast in the role of the waiter in the restaurant scene because of his resemblance to Benedict Cumberbatch, but they liked him so much they made him Tom and brought him back for The Sign Of Three.

54. Sherlock’s line, “You know my methods Watson, I am well known to be indestructible” was lifted from 1965 film A Study In Terror starring John Neville and Donald Houston as Sherlock and Watson.

55. Gatiss’ script described “a Bonsai tree covered in surgical gloves” in Magnussen’s mind palace at the end of The Empty Hearse. When set designer Arwel Jones asked if it had to be exactly that, Gatiss told him, “No. Whatever you can find that’s strange”, hence the dolls, clowns and general freakishness.

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56. They cast Charles Augustus Magnussen’s spectacles before they cast Lars Mikkelsen in the role. Originally, they had the idea that Magnussen would be watching events by the side of the bonfire so filmed some footage over the shoulder of an actor wearing his glasses, but that actor turned out to be around a foot shorter than Mikkelsen, so the footage wasn’t useable.

57. Back in series two, the moment when Holmes stops, then re-starts playing the violin when Moriarty is walking up the stairs to 221B Baker Street in The Reichenbach Fall is copied directly from 1945 film The Woman In Green, feat. Basil Rathbone and Nigel Bruce.

58. The Magnussen Inquiry scene at the start of His Last Vow was filmed in the Welsh National Assembly Building in Cardiff on the last day of the shoot.

59. In the original script for His Last Vow, Moffat specified that Appledore should look like “the Citizen Kane mansion for the iPod generation,” something similar to Bob Hope’s mansion. The location they used was Swinway House in the Cotswolds, which had so much glass that the crew’s faces were reportedly covered in plasters from walking into walls and doors all the time (there’s also a swimming pool there you could swap the deep end of at the touch of a button. Impressive).

60. The script for the episode originally described Magnussen as like a shark, unlike the original Doyle story which likened him to watching the snakes at the Reptile House of London Zoo. It was then changed to snake, until the piscine Lars Mikkelsen was cast, prompting Moffat to change it back to shark.

61. Una Stubb’s nickname for Lars Mikkelsen is “Mr Gorgeous.”

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62. Mikkelsen’s natural English accent has a Cockney flavour  to it (apparently learnt via watching Monty Python’s Flying Circus as a child) so they asked him to “Scandi it up a bit” for the role of Magnussen and sound more Danish.

63. Watson retrieving Holmes from the drug den, where he’d gone in search of somebody else, is a reference to the Doyle story, The Man With The Twisted Lip, in which the same happens. The rest of the episode has nothing to do with that story.

64. Martin Freeman couldn’t drive during series one and two of Sherlock, which is why – although it’s out of character for Sherlock and Watson – Benedict Cumberbatch is seen driving the pair to Dartmoor in The Hounds Of Baskerville. Freeman only learnt how to drive in 2013 in order to film US TV series Fargo and drives for the first time on Sherlock in His Last Vow.

65. The billboard next to where Watson parks outside the drug den displays peeling adverts containing the words “Information/Is/The Power,” surely a reference to Magnussen, the master blackmailer.

66. Tom Brooke plays Bill Wiggins, a conflation of two characters from Doyle canon: Billy the page boy and Wiggins, the leader of the Baker Street Irregulars.

67. Sherlock won’t be filming the outside of St Bart’s Hospital in future because it’s being developed into housing and restaurants.

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68. In the lab scene where Wiggins deduces that John has been cycling to work, they had trouble ironing the required creases into his shirt as it was made from a non-iron fabric.

69. The first cut of His Last Vow was around five and a half hours long, including several unscripted moments filmed by director Nick Hurran, such as Watson folding his shirt, and a close-up of some handwriting.

70. Gatiss tried to persuade Moffat that Mycroft should have secret gadgets and information contained inside his umbrella, but the idea was rejected as it “would have made it a different show.”

71. Yasmine Akram, who played Janine in The Sign Of Three, was so well-liked, she was brought back for His Last Vow to play Magnussen’s PR. Gatiss says, “You have to back-track and think ‘was she attached to Mary so that she became her friend so she could go to the wedding, is that all part of Magnussen’s terrible web?’”

72. The first cut of the scene in which Watson is flabbergasted at Janine’s appearance made him look as if he was jealous of Sherlock, which wasn’t the desired effect.

73. The description of Magnussen as “the Napoleon of blackmail” was lifted from Doyle’s description of Moriarty as “the Napoleon of crime” in The Final Problem, which itself was lifted from Scotland Yard detective Robert Anderson’s description of real-life US criminal Adam Worth, whom he described as “the Napoleon of the criminal world.”

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74. The original Doyle character of Charles Augustus Milverton was based on a real blackmailer, Charles Augustus Howell, a Victorian art dealer who was murdered in mysterious circumstances.

75. Early on in the script was the idea that Mary would be taking violin lessons from Sherlock, which he enjoyed giving, only for her arrive at a different time to usual one week and present her case to him as a client.

76. Magnussen’s office building is an amalgamation of three different London locations including the Tower 42 skyscraper where his office scenes were filmed.

77. The idea that close contact with a mobile phone could corrupt a key card, discussed by Sherlock in the lobby of Magnussen’s office building, came to Moffat while on the Sherlock TCA press tour in the US, when he was repeatedly warned not to keep his hotel key card near his phone in case corruption occurred.

78. The people playing the security men who freeze frame while Sherlock is explaining his potential routes to Magnussen’s office to John were street performers from Covent Garden cast because they could convincingly hold a position as if paused for a long time.

79. When the word “liar” flashes up around Mary in this scene, originally the word was spelled incorrectly as “lair.”

80. The ‘mind palace’ first appeared in the Gatiss-written episode The Hounds Of Baskerville, inspired by its use in the Thomas Harris novel Hannibal, mostly as a way to avoid Sherlock having to conveniently say ‘hang on, I’ve just remembered something’ which helps him to solve the case.

81. Sue Vertue and Steven Moffat’s son Louis (credited as Louis Oliver) plays the young Sherlock Holmes in the mind palace scene, and later, at Appledore. He auditioned for the role, for which he had to wear different coloured contact lenses and dye his hair.

82. In the scene where Sherlock falls back slowly, the orchid plant is simply pulled along the shelf using fishing line, the whole set did not rotate, as some thought it had.

83. The Holmes boys’ childhood dog Redbeard was named, according to Gatiss, “after Sherlock’s pirate fixation as a child,” in reference to Mycroft’s A Scandal In Belgravia line “initially, he wanted to be a pirate.”

84. Moffat used the same rhyme Moriarty says in the padded cell: “It’s raining, it’s pouring, Sherlock is boring” in his 2007 TV series Jekyll, in which Mr Hyde leaves a message on Mr Jackman’s Dictaphone saying “It’s raining, it’s pouring, Jackman is boring.” He was unaware of having re-used the line.

85. The production team has had several summer coats made for Sherlock as an alternative to his Belstaff winter coat, but they are always rejected because, in the words of Steven Moffat, “He has to wear the coat. He always wears the coat”.

86. A now deleted scene (which features as one of the extras in the special edition DVDs) was filmed in which Magnussen goes to visit Sherlock in the hospital and licks his hand, calling it a musician’s hand, and ‘a woman’s hand’. Moffat denies any deliberate reference to Tom Baker’s famous line as Captain Redbeard Rum in the Blackadder II episode “Potato,” when he tells Edmund Blackadder, “You have a woman’s hands!”.

87. Originally, the script for the scene in which Janine visits Sherlock in hospital had them making friends at the end and making a deal to get together if neither had found anyone else by the age of sixty. In that script, Sherlock told Janine to “keep the bee hives” at the cottage in Sussex she’s buying with her tabloid kiss-and-tell money (a reference to Doyle’s character’s literary retirement home), but it was cut because it was felt that it got Sherlock off the hook too easily for his awful behaviour to Janine.

88. The corridor in Sherlock’s mind palace in which Mary stands wearing her fur with the word “liar” swimming around her is the same one that Watson ran down to save Sherlock in A Study In Pink.

89. Another hospital scene was cut from this part of the episode in which a doctor complained that someone had taken all the ward’s morphine and was told “Yeah, he does that,” in reference to Sherlock.

90. Moffat regrets cutting some lines in the scene where Watson notices the perfume bottle that make it clear that Sherlock has been back to the flat. The original script referenced some missing food. “By cutting that, it’s not immediately impactful that he’s left the perfume bottle, so I regret that, I wish we’d kept that.”

91. Gatiss discovered the real-life secret of the fake facades at 23 and 24 Leinster Gardens (a plot point in His Last Vow) while researching the London underground for The Empty Hearse and subsequently tried to fit it in to both that episode and The Sign Of Three, finally making room for it in His Last Vow. Apparently, local pizza delivery companies commonly send employees to the address, which is merely a five-foot-deep facade, on their first day as a prank.

92. A couple of lines between Mary and Sherlock were cut from the scene after he appears behind her in the Leinster Gardens corridor. Originally he said, “You saved my life” and she replied “I nearly killed you” and he says “And you didn’t hit the middle of the coin. Nobody’s perfect.” Moffat wishes he’d kept those lines in.

93. Gatiss says “my favourite bit, in the midst of this emotional trauma, is that John is still mostly concerned about sorting his hair out” in reference to Freeman smoothing down his mussed hair after pretending to be Sherlock in silhouette.

94. Benedict Cumberbatch’s dad, Timothy Carlton, insisted on wearing the garish red bow tie on the Christmas Day scenes because he says he wears bowties and musical socks at Christmas in real life to embarrass him.

95. Mary’s ‘real’ initials on the USB stick, A.G.R.A, are a reference to the great Agra treasure which is the character’s inheritance in the Doyle story which introduces the character of Mary Morstan, The Sign Of Four.

96. The slow-motion fall and Mary hitting Magnussen scene was filmed using a Phantom camera. A special camera rig was also designed that had a camera attached to a bicycle wheel mounted on the ceiling so it would pivot around the set.

97. Amanda Abbington didn’t know what Mary Morstan’s backstory was going to be when she was filming The Empty Hearse and His Last Vow. “Amanda certainly wasn’t imbuing it with ‘spirit of assassin’” says Freeman. “I’m playing it all very innocently. I would have played her differently, had I known her backstory”, says Abbington.

98. Sherlock’s fall backwards when Mary shoots him was achieved using a custom-built rig that was moulded to Cumberbatch’s body contours and operated by a manual lever outside the set. The moment was inspired by director Paul McGuigan filming of Sherlock falling backwards, when drugged by Irene Adler, onto his bed in A Scandal In Belgravia.

99. In the scene where Mary shoots Sherlock, His Last Vow director Nick Hurran asked for there to be a delay between the bullet-hole appearing and the blood beginning to flow, so the audience could momentarily believe he wasn’t injured, to make it more dramatic when they realise he is.

100. Cumberbatch and Gatiss were smoking herbal cigarettes in the Christmas Day scene in the garden, until Cumberbatch requested real ones.

101. The line from Mycroft to Sherlock that “your loss would break my heart” was heavily debated, but left in on the understanding that Mycroft had been drugged by that point, explaining his emotional candour.

102. Mark Gatiss gave Steven Moffat a Holmes-style magnifying glass for his fiftieth birthday.

103. Magnussen’s henchman with the long white ponytail was one  of the card players in Le Chiffre’s game in 2006 Bond film Casino Royale, which, coincidentally, starred Lars Mikkelsen’s brother, Mads.

104. Moffat originally used news magnate Magnussen’s line “I don’t have to prove it, I just have to print it”, in an episode of Press Gang, his 1989 – 1993 CITV series about a school newspaper.

105. Sue Vertue directed the moment of Mycroft saying “Sherlock, what have you done?” in the helicopter (which was actually a plane).

106. Benedict Cumberbatch requested various ways of killing Magnussen, at one point asking if he could twist his neck. “He’d gone a bit Khan” says Moffat.

107. Mycroft’s reference to the “blunt instrument” is a direct quote from one of the Bond continuation books written by John Gardner.

108. The plane Sherlock is taken away in was lent to the production by its owner, Bruce Dickinson from Iron Maiden.

109. The name William Sherlock Scott Holmes was taken from the fictional 1962 biography of Holmes’ life, Sherlock Holmes of Baker Street: A Life Of The World’s First Consulting Detective, written by William S Baring-Gould.

110. Sherlock’s “the East wind takes us all in the end” line is taken from Doyle’s His Last Bow, from a conversation between Sherlock and Watson on a balcony, which is canonically, the last time the pair ever speak.

111. Sherlock could go on indefinitely, according to its creators: “The idea, if we could of finding Martin and Benedict in these chairs aged fifty – sort of the age Holmes and Watson are usually portrayed – is sensational. It would be lovely to feel we could do that.”

The Sherlock series 3 special edition box-set is available now on DVD and Blu-Ray, and available to buy from the BBC Shop, here.

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