My short story "Magdala Amygdala" won the Bram Stoker Award for short fiction in 2013; you can find it and other dark stories in my new collection Soft Apocalypses. I'm also the author of the Jessie Shimmer urban fantasy series from Del Rey and Alliteration Ink.
I mostly write in different sub-genres of science fiction, fantasy, and horror. I occasionally do media tie-in work and have written stories for a Doctor Who anthology and a Hellraiser anthology. I've written some erotica, but I haven't written any romance (some readers picked up my urban fantasy novels expecting them to be romances and were not prepared for all the demonic mayhem). My science fiction is also often fairly dark, and my horror is darker still.
I've written a fair bit of zombie fiction and other post-apocalyptic fiction; I also write Lovecraftian fiction, steampunk, arcanepunk, biopunk, weird westerns, alternate history, quiet horror, social science fiction ... if I enjoy it as a reader, chances are I've written it. The big exception here is kids' literature; at some point I want to write some YA, if I can ever get my characters to stop swearing, drinking and having sex.