Literary junk food, I think. Fun, but not much substance, which is odd now that I think about it, given the gravity of some of the subject matter.

Quick and enjoyable read, if you're willing to accept the premise that a ghost can inhabit and control electronics, and carry on a relationship with a living person. (Yes, that includes adult toys. You know your mind went there.) And that nobody would find the manner of his death a bit suspicious. And that someone can fall 80 feet into the sea without being seriously injured, while clutching a paper notebook that not only stays with him but is still perfectly readable afterward.