fic: Mistaken

[ancalime8301]

Title: Mistaken
Author: ancalime8301
Rating: PG
Wordcount: 2,685
Warnings: none
Summary: Holmes makes an unintentional miscalculation.
A/N: Written for the "accidents" square on my hc_bingo card.

On my LJ
On AO3

(cross-posted to dispatch_box)