My Soul to Keep

My Soul to Keep by Tananarive Due, 346 pages.

Dawit has been around for a while, born in what is now Ethiopia, he has been alive (more or less) since around 1520. Dawit is sworn to secrecy about how he came to be the way he is but when he falls in love, marries, and settles down, he begins to think about how he can keep his wife and daughter with him throughout eternity. Jessica, his wife, is a journalist who stumbles across a couple of seemingly unrelated stories that link back to the man she knows as David.
Moody, and violent (like its protagonist), Due's novel moves along quickly with twists and turns.