It's a nice combination of charm, trickery, and skepticism. Bits about his life, teaching techniques he uses in his mentalism, and interesting items from his work. For example, he goes into this trick in detail: https://www.youtube.com/watch?v=haP7Ys9ocTk
For those who don't watch it, he pretends to be an astrologer and gives a group of people a reading. They are shocked at how accurate it is. He then has them randomly trade readings and try to guess who the reading applies to. It turns out that he gave them all the same reading, making use of the Forer effect: https://en.wikipedia.org/wiki/Barnum_effect
In the book, he explains how he constructed it and gives the text of the reading. It was a pleasure to read through and see how artfully it was done.