Subject is exactly religion
A collection of undercover reportages focused on ideological and religious groups generally hidden from the public eye.
Tim LaHaye, George Bush, and the Religious Right: Craig Unger's undercover assignment for Vanity Fair
Unger, undercover on a tour group led by Tim LaHaye (co-author, the Left Behind series), travels the Holy Land with some of LaHaye's followers. His reporting examines the connections George W. Bush, then in office, had to Religious Right leaders, and their influence on policy. The pieces also look at the everyday experience of believers - because Unger did not reveal that he was a reporter on assignment (though he did say he was a writer from New York), he was, he believes, spoken too more freely than he would have been with full disclosure.