Being a mute can be difficult, especially when you have a lot to say in a world that barely listens. Harley Watson has had this problem for a long time. When she's sent off to visit her uncle John on holiday, she meets his unusual flatmate, Sherlock Holmes. From gruesome experiments in the fridge to crime-solving nonstop, he's quite an odd one...an odd one who can somehow hear her.

Sherlock and Molly investigate in the case of Tom's death. While the investigation brings them closer together, Molly's past threatens to tear them apart. Will Sherlock commit the blunder of his lifetime or do the right thing? Whatever that may be…

The friendship Sherlock Holmes and Molly Hooper shared when they were younger had changed significantly over the years. When Sherlock finds that Molly's trust in that friendship had faltered because of his own carelessness, he comes up with an interesting plan to show her that he still cares very much...a plan that will bring about many more changes than they both anticipate.

Sherlock Holmes has decided, categorically, that he is done with the process of hiring maids, whether they be efficient or not. Mrs. Hudson can manage, despite whatever she says about her hip, and the arduous process can be ignored, at least for a while. Of course, things hardly ever go as planned.