"John,
i'm so, so sorry.
-SH"
Set after The Reichenbach Fall, Sherlock is struggling without his blogger to keep him right. The voices in his head are back, and they tell him such horrible things...
Back from Afghanistan, John is feeling out of sorts, suffering from his leg issue and the nightmares from PTSD. One night, he feels especially low, and calls a depression hotline.
The intelligent but rude hotline worker is nothing like he expected. Funny how months later, he still can't get the unusual conversation, or that man, out of his head....