How do religious beliefs change who we are and how the world works? Lawrence Wright explores these issues in a new exposé of Scientology and its founder L. Ron Hubbard. People view Hubbard as a con-man, but was he? How did his book Dianetics draw so many people into a church that demands total submission? Wright has also written a play about the famed journalist Oriana Fallaci's move to the extreme right.