Sherlock

Mary Morstan

Mary Elizabeth Watson (formerly Morstan, born Rosamund Mary) is the identity used by a former assassin.

She worked as a nurse in the same clinic as her husband John Watson, whom she met sometime after his best friend Sherlock Holmes' supposed death. She and John have a daughter named Rosamund Mary. She was killed by Vivian Norbury when trying to save Sherlock from being shot.

Mary's past is a little unclear; however, it is known that she was born Rosamund Mary and that she used to be a trained assassin who went rogue and changed her identity in order to hide from her past. Sherlock suspects that while her accent is English, she may not have been born British. Approximately five years before meeting John Watson in 2008, she chose the name "Mary Elizabeth Morstan" from the gravestone of a stillborn child, in order to hide her true identity, and claimed to be an orphan in order to cover for the fact that she had no family.[1]

They had been together at least six months before John proposed.

Shortly after they first met Sherlock performed a series of deductions about Mary, which revealed that she was an only child, that she was clever, a nurse, linguist, short sighted, romantic, had a cat, wore size 12, was a disillusioned Liberal Democrat, bakes, had a secret tattoo and an appendix scar, and that she was a "liar". However, Sherlock did not reveal any of these deductions to anyone.

John planned to ask Mary to marry him shortly before Sherlock's return, he took her for a meal out and brought a ring, however the meal was interrupted by Sherlock just as John was about to ask her. When John finally saw that Sherlock was alive the horror on Mary's face was obvious, as she knew just what Sherlock's "death" put him through. Despite being together for less than two years, Mary was more of a serious girlfriend than the others girlfriends John had and he proposed to her soon after the interrupted meal.

Mary married John on the 18th May, at St, Mary's Church in Sutton Mallet, Somerset.[2] The wedding was attended by among others, Greg Lestrade, Molly Hooper, Tom, Mrs Hudson, General Sholto and Sherlock who was John's best man. Her wedding was tumultuous and she received a possibly threatening telegram from CAM (who could be Charles Augustus Magnussen). Her first dance with John as a married couple was a waltz written by Sherlock. She was revealed to be pregnant during one of Sherlock's speeches at the wedding.

The truth about her past was revealed to some extent during Sherlock and John's investigation of Charles Augustus Magnussen. Under a threat from Magnussen, she went to his office intending to kill him, however she was discovered by Sherlock whilst he and John were breaking into the place. Knowing that if she killed both men, John would be a suspect, and she could no longer kill Magnussen without Sherlock witnessing, she shot Sherlock just below his chest where the wound would not surely kill him. She then hit Magnussen over the head and phoned an ambulance for Sherlock and left the building. When he was in the hospital, she told Sherlock not to tell John about any of it.

AGRA

The flash drive containing Mary's personal history is given to John.

After Sherlock ran away from the hospital Mary found him after he fed her a series of clues. He projected a picture of her face onto an empty house – saying that it mimicked her personality, a façade. Inside the house, they discussed how she could easily have killed him yet chose not to. Mary said that she would do anything not to have John leave her. However, John was present while she confessed to being an assassin. They returned to Baker Street, where Sherlock told him as much as he knew about her. Mary produced a USB drive that she claimed had everything about who she used to be on it. She begged John not to read it in front of her, because she did not want to watch him stop loving her.

Six months later at Christmas, after a period of separation between Mary and John, John told her that he did not think her past was his business but that her future was his privilege. Mary, now known to be pregnant with a girl, was incredibly relieved. John admitted he was still angry at her, but the two remained together. After Sherlock kills Magnussen, Mary and John see him off in an emotional farewell when he is being exiled and sent on a dangerous mission as part of his punishment. However Sherlock ends up being flown back in when images of the deceased Jim Moriarty start appearing around London, indicating the late master criminal may still be alive.

Mary later gives birth to a healthy baby girl, named Rosamund Mary Watson, after her prior self and Sherlock, Molly, Mrs Hudson and possibly D.I. Greg Lestrade were named as Godparents. Alas, Mary is tracked down by a member of the assassin team she was part of and is forced to leave John and Rosamund behind whilst she takes random trips around the world, a new country, a new identity. Eventually, she is tracked down by Sherlock and John, but also Ajay, the fellow assassin she was running from. The three escape.

Mary meets Sherlock in an alcove to show him her past. She knocks him out using some sort of drug and leaves after he has seen the real Mary Watson, also known as Rosamund Watson. Her real maiden name is still unknown. We later find out, in an aquarium, that a government secretary, Vivian, gave the order in a fateful mission in Georgia (the country, not the state) that cost the lives of half of A.G.R.A., Mary's former assassin team. She then shoots Sherlock, but before the bullet could get to him, Mary intercepts it and dies from the bullet wound. John doesn't show up until she is shot, so he blames Sherlock for not protecting her and the two are not on good terms.