I'm going to show great restraint in saying little about this book so as not to spoil it for anyone who hasn't read it. What I feel is important for readers to know is that this is a book written by a Christian of the time to a Christian audience of the time. The author brilliantly shows fellow Christians how they are contributing to the horrors of slavery whether they are nice slave owners or brutal one's and whether non slave owning northerners or southerners. 
 The book is filled with irony and sarcasm that is meant to make everyone question their own beliefs. 
 I started this book on Audio because it came up first from the Library. I would highly recommend the one read by Mirron Willis. His reading was superb and with it, the irony and sarcasm came across clearly. I'm not sure if it would have been as clear from a virgin first reading or not. From some reviews I've seen, I tend to think not. 
 I loved the book so much that I didn't have patience to wait for when I could listen so I also got a free copy on Kindle and ended up mostly reading it. Some day when I have a really long trip, I'd love to listen to the full audio of this. 
 I absolutely loved this book. It was brilliant.