City of Masks - Daniel Hecht

Cree Black is a paranormal investigator, called to New Orleans to remediate (as she puts it) a ghost who is attacking a woman who has moved back into her childhood home.

When she meets Lila Beauforte Warren, Cree quickly figures out that the ghost is more than immediately meets the eye ... and, in fact, that there are two ghosts in the house. With the help of Lila's psychiatrist, Paul, and with no small amount of hindrance from Lila's old-money family, Cree gets to work.

Because this is not a typical paranormal tale about things that go bump in the night, it's hard to write a review without spoilers. Suffice it to say that pretty much no one in the Warren and Beauforte families is quite what they seem, and that there are depths to this lengthy mystery novel that are a little unexpected from the description.

Well-written and entertaining.