A week after Sherlock left 221B Bakers Street on a plane then came back, John moved out to live with his new wife, Mary, leaving the hyper detective on his own. But obviously worried for his friend, John gets Miss. Hudson graciously put out an ad for a new renter. A young woman by the name of Gracie Harborston accepts the offer and moves in to Sherlock Holmes flat unknowingly. Now Gracie has a past. As a detective and a few other things. She holds a lot of secrets and was teased her outward physical appearance is like Holmes but is soon told she is so much like Sherlock Holmes it's "terrifying". Gracie has no care for Holmes at first unlike most woman and sits at the window and plays her violin ignoring his presence which the tall detective appreciates at first but begins to strangely feel a need to make her feel welcome. With Moriarty looming over their heads even while dead, it makes things complicated. Very complicated....