More Than You Know is the account of two doomed love stories taking place in the same Maine village a hundred years apart, the more recent story featuring a ghost from the first one, a ghost that is visible only to the lovers in the second story, no one else. Why they are not promptly shut up in a psychiatric hospital is not clear to me. The older love story is not so bad, with a headstrong daughter defying her parents to marry a man they (rightly) see as unsuitable, but it’s never clear how their great love peters out and flips over to hatred. And the point-counterpoint arrangement of one chapter for the old story and one for the new is way too neatly arranged.
I would recommend finding another story to read, sans ghosts.