Mary talks with two pastors who took part. One of them was so concerned about hiding his identity, he spoke to her anonymously over Skype. He used a laptop from his car, which he parked outside a shopping mall somewhere in the US.
Later in the show, Mary interviews Daniel Dennett, a co-author of the study, a professor of philosophy, and a co-director of the Center for Cognitive Studies at Tufts University. The work inspired The Clergy Project, a safe haven for active and former clergy who do not hold supernatural beliefs.