I have not got the book yet however it is all about the Q&A. One of if not the most powerful effect anyone can do. There are many many variations on the effect, the only question is can you perform the effect well enough to take value from the methods that Luke gives. I have spent near 3 years on my Q&A and I am not even close to being happy with it. Truth be told I am sure there are some great ideas but this effect is something that scares even the most self assured performers.