The Fate of the Watson Baby has been Staring us in the Face this Whole Time
We’ve been discussing this for ages: How can the baby be John’s with everything we know about Doyle’s canon? How can the baby be both real and not real? Why is she dressed like a rabbit? Why does she have the name of a stillborn from episode 9 and the initials of a stillborn from episode 1 if she’s alive? That’s because she is stillborn. The baby doesn’t survive the birth. That doesn’t mean the family doesn’t take a baby home with them.
Just like Dr Stapleton, Nurse Mary Watson is going to bring home a “rabbit” that isn’t the one she was supposed to have. Kirstie got ahold of the wrong rabbit after her mother accidentally brought home one of the lab specimens that glowed in the dark. Dr Stapleton exterminated it after her daughter found out something was not right about the rabbit. “Hutch still locked, no sign of a forced entry.” Obviously an inside job. This would be an excellent parallel to “the dog did nothing in the night time” – which we saw referenced at Setlock this summer, the original story being “The Silver Blaze”. So the baby coming home with Mary isn’t going to be hers, John is going to doubt its legitimacy and consult Sherlock – just like Kirstie Stapleton – but Mary isn’t going to know that’s being investigated behind her back. She will abduct the child – hopefully she’ll just give her away to some loving family, but we all know how mirrors work (she will exterminate her off screen) – and John will think someone broke in and took her. Sherlock will realize it was an inside job. Mary will make her escape after she (AGRA) falls overboard. She’ll swim like a shark (who eats her young).
Wonder why Mary has been wearing turned-up jeans this whole time? Because she’s not the mother. We were right, there was a reason they gave Sherlock that line in episode 3 about deducing paternity – except it will work both ways because Mary isn’t the mother, just like John isn’t the father.