Barbara Hambly

a multiple Nebula-award nominee and winner of a Locus Award has written fantasy, science fiction and historical novels including the James Asher and the Benjamin January series.

The Asher series recounts the adventures of an Edwardian "On His Majesty's Secret Service"–type agent and Oxford professor who, with his much younger wife Lydia, partners with a 500-year-old Spanish vampire to stop a seemingly inevitable holocaust.
Those Who Hunt the Night
Traveling With The Dead
Blood Maidens
The Kindred Of Darkness
Magistrates Of Hell
Darkness On His Bones

Benjamin January stars in 13 tales as a free man of color, a Paris-trained doctor who works as a musician in New Orleans. A magnet for danger, he goes where the law will not to see justice done.
A Free Man Of Color
Fever Season
Graveyard Dust
Sold Down The River
Die Upon A Kiss
Wet Grave
Days Of The Dead
Dead Water
Dead And Buried
The Shirt On His Back
Good Man Friday
Ran Away
Crimson Angel