Title: Observations on Sentinels and Guides in Victorian London
Author: RyuuzaKochou
Fandom: Sherlock Holmes (2009), The Sentinel
Pairing(s): Sherlock/John
Rating: General to Mature
Warnings: None
Genres: Drama, Romance, AU, Action/Adventure
Word Count: 89181

Summary

A Victorian era AU where Sentinels and Guides are members of everyday society. Starring Sentinel! Holmes and Guide! Watson.

Why You Should Read This:

This is a wonderful fusion offering all that I love about Sherlock Holmes (the cases etc) while tossing in the subplot of The Sentinel. I will admit to having a soft spot for fandoms that have a crossover/fusion with The Sentinel.
While this is set within the Sherlock fandom of the 2009 movie, if you prefer you can read it from the perspective of the Sherlock BBC without much trouble.