Ghost Trackers - Jason Hawes, Grant Wilson, Tim Waggoner For the life of me, I can't figure out why the guys aren't promoting this book. Look on all their sites, you can't find it mentioned anywhere!! I tripped over this book accidently! I loved their non-fiction books and this one was right up there! It was good and creepy reading, which took a bit to take off, but once it did, I loved it. This is def. a series I will continue on with.