Michael Alfred "Mike" Warnke is an American Christian evangelist and comedian who was exposed in 1992 for inventing stories of his alleged past as a Satanist. Before being debunked, he was viewed as an "expert" on Satanism in the 1980s.
We watched a bunch of this guy's videos (and read this book and other materials)in my church youth group in the late 80's and early 90's. He was supposedly a former Satanist, but some scandal revealed him to be a fraud. For all the convictions that many Christians have that "the Devil is just out to convert you", I never had any Satanists recruit me.
The author has been proven to be a liar and to be without credibility. Ignore this book and move on to something with some truth. I hate that I spent any money supporting this fraud in the 80s and early 90s before his lies came to light.