Mr. Darcy, Vampyre

A married man in possession of a dark fortune must be in want of an eternal wife...
*My hand is trembling as I write this letter. My nerves are in tatters and I am so altered that I believe you would not recognize me. The past two months have been a nightmarish whirl of strange and disturbing circumstances, and the future...
I am afraid.
If anything happens to me, remember that I love you and that my spirit will always be with you, though we may never see each other again. The world is a cold and frightening place where nothing is as it seems.*