I love seeing the changes book covers go through during their design process. I've talked about this subject before, but I found another book that's gone through at least two strikingly different renditions (and I suspect went through many more than this based on statistics of these sort of things). The book is T.L. Hines' debut from Thomas Nelson, The Unseen. Here are the two covers side by side (click on the pic to enlarge it). What do you think? The one on the left was an earlier version, the one on the right looks to be the final.
There's definitely the same theme going on here, but that final version is quite intriguing. Make you want to read the book? From the publisher's description it sounds pure Tony Hines!