That crunching sound you hear is Lawrence Wright bending over backward to be fair to Scientology. Every deceptive comparison with Mormonism and other religions is given a respectful hearing. Every ludicrous bit of church dogma is served up deadpan. This makes the book’s indictment that much more powerful. Open almost any page at random. That tape of L. Ron Hubbard, Scientology’s founder, that Wright quotes from? “It was a part of a lecture Hubbard gave in 1963, in which he talked about the between-lives period, when thetans are transported to Venus to have their memories erased.”