All I bought today...one lonely little book

Midnight in the Garden of Good and Evil.
I love the movie, although I haven't seen it in a few years...well probably several years. I was surprised to find this book was NOT fiction. I'm very interested in reading it even more knowing that. It has mixed reviews on Amazon and I must admit I'm review-dependent. If a book gets bad or even so-so reviews, I usually will not buy it.
So...this one seems kinda iffy, but I hope I love it. Have you read it? What did you think...without giving away any details of course!

Anyway, how can a book lover walk out of a book store with only one book you may ask? Easy when you just moved to what seems to be the 'sticks' and the only bookstore within 30 miles is privately owned and small. I had a list of 3 books I wanted to buy and this was the only one they had in stock.