Tomb (The Vampire Oracle)

She gave him her heart her blood, and he gave her eternity.

Douglas McCarthy is a vampire haunted by the screams of his victims. After killing a woman accidentally, he vows he will never kill again, and entombs himself within the walls of his
own cellar.

Diagnosed with inoperable brain cancer, Holly Cartwright knows she only has months to live. Buying the Whispering Pines Plantation with her life savings was, perhaps, the best thing she ever did. But Holly doesn't care that the manor appears to be haunted, as she'll soon be joining the "ghosts" herself.

But what she discovers behind the walls is more than she ever dreamed possible...