Delphinium, or A Necromancer's Home - The Courting of Life and Death, #2

Lady Elizabeth Anne does not know about the dark magic her beloved practices, and he has no intent to tell her. As they travel to his childhood home for the summer, Pierre Salvador attempts to balance his newfound love with his murderous cræft. After they arrive, the future Duc de Piques finds there is much to be done, and duties cannot be put off any longer. A fatal illness is spreading throughout his land, he is being claimed by those of Faery, and someone has already tried to take his life. But it will take much more to kill a lord of death.