Just finished reading 'The Shack'.

In short, the Shack is about a man who spends a weekend at a shack -- what is likely the crime scene of his murdered six year old daughter -- with God. Actually with The Trinity. (all of this is on the cover of the book -- I'm not giving a ton away with this). But, as you might imagine, that makes part of the book very difficult/ painful to read. I had to 'press on' further than most people said they did -- again, I'm sure because of the skeptical way I approached the book.
I would highly recommend you read this book. I would highly recommend you NOT approach it as preaching/ theology to prove or disprove. It is fiction. But it is fiction that I will carry with me and roll around in my brain for a while.
Other friends who have reviewed The Shack: