One of the hottest tickets at Sundance was for "Going Clear: Scientology and the Prison of Belief," Alex Gibney's new documentary. The first trailer has arrived, and it gives you just a taste of the revelations to come courtesy of Gibney, "Going Clear" author Lawrence Wright, and former Scientologists like director Paul Haggis, Marty Rathbun, and Hana Eltringham.



The response at Sundance was overwhelming, and some critics reported receiving an email from a Church of Scientology spokesperson requesting that they amend their reviews with a statement from the organization. The Church of Scientology has also responded with advertisements and online media campaigns targeting Gibney himself.



HBO, which will be airing "Going Clear" on March 29, had 160 lawyers vet the documentary beforehand.