Barton wrote `` The Church of Satan : A History of the World 's Most Notorious Religion '' ( 1990 ) and `` The Secret Life of a Satanist : The Authorized Biography of Anton LaVey '' ( 1990 ) .
Barton has written two books : `` The Church of Satan : A History of the World 's Most Notorious Religion '' and `` The Secret Life of a Satanist : The Authorized Biography of Anton LaVey '' .