This is a very ho-hum haunted house story with all of your usual elements, like shadow figures, light fixtures and doors that seem to operate on their own, and ghostly whispers and singing.  In a lot of ways, I felt like I was reading a mediocre paperback from hell, and like some of those old stories, this was easy to read and kept me turning pages, but it was all very much a skimming the surface type of story.  The characters were mostly superficial and unlikeable (though I felt sympathy for Hunter) and with five different timelines, it was even harder to get invested in them.  I was most concerned about the Spielman gerbils throughout my reading experience here.