One of the big hits in the publishing world recently is a work of fiction with a Christian premise, The Shack. It has been a bestseller for a good long time now and the buzz is continuing. There are many reviews out there, but if you are considering reading it, then I recommend that you take a look at this review at Catholic Exchange as well as the review at the Catholic Media Reviw Blog.
Lastly, check out Fr. Barron's review below. All three should give you enough info to make a decision on whether you might want to read it or not.