Love can't be Deducted

Is London big enough for another Sociopath and Doctor? Has Sherlock and John met their matches in both Deduction skills, Medical skills, and interests? And what is this dark cloud coming around London and all of the world? Questions with no answers! How will this end! (Disclaimer: I do not own Sherlock BBC or any of its characters. I own Alice and Johanna. Thank you and Enjoy.)