Claim of Darkness
it’s a rape/non con. John is kidnaped and kept at vampire Sherlock’s sex slave. very kinky and dark. it’s on fanfiction.net the tags are in a different place then on AO3. READ THEM!!
Haemogloblin Hell
this is one i’ve been reading off and on. it’s a multi chapter. vampire also with alpha/beta/omega dynamics. it’s about John and Sherlock bonding and Moriarty trying to come between them.
Fledge
is a work in process but very good. 2 of the 3 chapters are up. it’s a dark Sherlock, dark John vampire love story.
Visitations
a very heavy dub-con PWP. Vampire Sherlock feeding from John then having sex with him. it’s a WIP, half done
here’s a few to get you started. though there are a lot more out there.
from Tumblr http://ift.tt/1rPigul