And yet, hardly anybody writes the ship!
I had so much trouble finding recs to list here. Of course, Sherlock BBC descended on all of Holmesiana like an atmospheric detonation - lots of light and heat and force and when it was over hardly anybody was left, wandering about dazed and wounded and changed forever; it will take at least another decade, probably, for Holmes fandom as a whole to truly recover. There is some Holmes/Moriarty in Sherlock fandom, but Sherlock's Moriarty was so changed that it's not really the same thing; and tbh I can't handle Sherlock in anything but very, very small doses. (I fled the fandom that was once home before the detonation and have hardly been back - I didn't watch the second Downey film because there was still so much ambient Sherlock around.) (I know I should watch Elementary if I want some good Holmes/Moriarty, but y'all convinced me the show was so good I wanted to watch the show and not just learn it from fic, and someday, surely, I will watch shows other than Buzzfeed Unsolved and Ask a Mortician? Not today though. Next year isn't looking good either.)
There seems to be a fair amount of Russian fic in the pairing on AO3 but that's no help for me. And apparently there's a relatively new anime out starring Moriarty? So that's a thing.
The most widely-rec'd pre-Sherlock Holmes/Moriarty fic (and the only one in my pre-AO3 bookmarks) seems to have only ever been up on the Holmesslash Yahoogroup. I'm told Holmesslash was archived before Yahoogeddon, but I don't think it's been archived anywhere public.
I always have this desperate feeling that there must be, somewhere, a hidden dispatch-box or something full of all the Holmes fic from before c. 1995, but it's so darn hard to find any!
So here, have three stories from three different continuities that are really as much about Watson and Moran - the sidekicks - as Holmes and Moriarty. Moran at least was mostly outside the blast radius (he's good at that.)
- Good For The Soul (3158 words) by HiddenLacuna
Fandom: Sherlock Holmes - Arthur Conan Doyle, Sherlock Holmes & Related Fandoms
Rating: Mature
Warnings: Major Character Death
Relationships: Sherlock Holmes/John Watson, Mary Morstan/John Watson, Sherlock Holmes/James Moriarty
Additional Tags: Alternate Universe - Soulmates, Soulmate-Identifying Marks, Soulmate-Identifying Timers, Trope Subversion/Inversion, Soulmates, Community: holmestice, Johnlock Roulette
A tragic soulmark AU. - The Strange Tale of Charon's Obol (5170 words) by ColebaltBlue
Chapters: 1/1
Fandom: A Study in Emerald - Neil Gaiman
Rating: Teen And Up Audiences
Warnings: No Archive Warnings Apply
Relationships: Sherlock Holmes/James Moriarty
Characters: Sherlock Holmes, James Moriarty, Sebastian Moran
In a darker London, Moriarty and Moran must team up with master criminals to take down a blackmailer. - Expectation (4294 words) by Lindentreeisle
Chapters: 1/1
Fandom: Sherlock (TV)
Rating: General Audiences
Warnings: No Archive Warnings Apply
Characters: Sherlock Holmes, John Watson, Sebastian Moran
Additional Tags: hurt/comfort bingo
Moran and Watson! Trapped together after a flood! Must learn to rely on each other!