Wonderfully creepy in moments, but ultimately not as satisfying as I'd hoped. 
 Also, I understand that authors writing modern stories need to bring in elements of current technology, too, but much of it seemed forced. The prime example? The textspeak-laden e-mails from the protagonist's nephew. They made me want to go sit on my front porch with a hose and squirt any kids that happened by. (Or do kids go outside anymore?)