I've done 8 slash recs and I'm going to try a few het recs. I just recced this fic like a week ago, before I knew I was doing Rectober. And I don't care, I'm going to rec it again.
ED: LINK FIXED. I evidently "spoiled" my rec for today by pasting its link in by mistake :)
rageprufrockLeast of All Possible MistakesFandom: Sherlock (BBC)
Pairing girl!Lestrade/Mycroft Holmes
Words: 118,000
Rating: Explicit
This fic has over 150,000 hits on A03 for a reason. It's an original novel. George Lestrade as a girl is fantastic. This Mycroft is actually likeable. Sherlock as an addict poised on the edge of self-destruction is too real and fragile and also arrogant as f*ck. It follows BBC canon, but has a hell of a lot else to recommend it. Read it even if you don't like genderswap, perhaps even if you don't like Holmeses. It's really that good.