A/N: And now for our favorite detective! Excuse the shortness of this, but I've decided each perspective shift will be its own chapter. Don't worry, Sherlock won't always be so brief.
The world's only consulting detective was perplexed.
It was logical, perfectly practical for John Watson to inquire after other roommates. Rent needed to be paid, and hundred-dollar case payments weren't exactly rolling in. It made sense. Mycroft had asked him if the whole thing upset him - he'd denied it. Of course he wasn't upset, why would he be? It was healthy and proper for John to be moving on. It had been years with no contact, not even a whisper - that's what anyone would do. But John Watson was not just anyone - that's what Sherlock Holmes believed.
But he was human, Sherlock knew that, too. Human beings craved attention, social connection, company. Stupid, insipid ideals. Still, Sherlock could hardly hold this new roommate against him. It would be exceedingly unreasonable to do so.
And so, Sherlock was perplexed. He was not an unreasonable fellow, and yet here he was, being… agitated. Yes, that was the word. Agitated. But why?
Sherlock needed to look into this new flat mate of John's. There had to be a logical reason he was upset.