This was a rather creepy book that I had no real idea where it was going at any point in time. Being hired to haunt homeowners for a tv show is something that I've never heard of before but it is an interesting idea. The ways they did the 'haunting' were interesting, and the little twists between the tv crew that were happening were interesting as well. 
I feel like I'll need to re-read this one in the future to pick up on more clues of the mystery aspect.