Well, if you're going to accept the blame, you have to help me by answering this question!

Would it work for the two of them to be in Silent Hill together, and the town to veer between being really nasty to Watson and really fascinating for Sherlock (who meant to be keeping an eye on John, really he did, but there were so many clues) until finally John was both in rather nasty peril and not mentally together enough to handle himself, and Sherlock who'd been chasing clues was too far away and suddenly realized it, and it was this "You dragged your friend into danger, and spent the whole time trying to entertain yourself with a mystery instead of keeping a decent eye on him, and now he's going to die because of you!" guilt-moment that the town had been orchestrating the whole time?

Or has someone already done that? I'm going to read thebaconfat's fic, and it's going to turn out to have that exact plot, isn't it?