Sherlock Series 3 Spoilers: Amanda Abbington confirms Mary Morstan role, finally!

by Anna Howell


As we previously reported, the new series of Sherlock is set to star a new cast member, one who is pretty familiar to one of the shows main stars, and now she has confirmed which role she will be playing.

When news of Amanda Abbington’s casting hit earlier this year it sparked rumours that she may have been brought in to play Mary Morstan, a love interest and eventual wife of John Watson, who is played by Abbington’s real life partner, Martin Freeman, especially when Benedict Cumberbatch, who plays Sherlock revealed that there would be a wedding in the new series!

Abbington, who has been with Freeman since 2000 after they met on the set of the film Men Only and has two children with him, was spotted on set in Wales filming scenes for the series finale episode, His Last Vow, with the dynamic duo and show writer Mark Gatiss, one of the genius’ behind the hit BBC detective series, who plays Sherlock’s bother Mycroft Homes in the series, earlier this year.

And now Abbington has come out and finally admitted that she will be playing Morstan to The Scotsman, whilst explaining some info about her character and the “fantastic secrets” she is harbouring, as well as revealing that she felt like “kind of third wheel” working alongside Freeman and Cumberbatch:

“I remember doing a scene very early on with Martin and Ben, and I was standing in between them and I thought, ‘I really have to up my game, this is proper’,

“They really bounce off each other. When I was at the read-through, I remember watching them, and the chemistry between them is just amazing. They do have this beautiful relationship, so getting in between that – which is what Mary does, she becomes this kind of third wheel – was scary.

“Also, the fans love these two together, so I’m sure Mary won’t be particularly liked by them, but I hope that on the whole people really like her, because she’s a great character and she has some fantastic secrets.”


The actress, who returns for the second series of Mr Selfridge next year, went on to reveal how co-creators Steven Moffat and Mark Gatiss had set their sights on her for the role from the very start:

“We were at Mark Gatiss’s house when ‘The Hounds of Baskerville’ first came on the telly. Afterwards they went into the kitchen and were sitting talking about the next series. I went in and sat with them.

“It had been mooted that I would be in it, might have a little part in it. They were talking about who might play Mary and I was like, ‘So, who are you thinking of?’ and they said ‘You’.

“I got very emotional because it just seemed so amazing, just such a gift.”

Sherlock is due to return to our BBC screens either late this year, or early next – Watch a clip from the new series in the new BBC drama promo below: