The controversial Alex Gibney Scientology documentary arrives to Sky Atlantic tonight which profiles eight former members of the Church of Scientology, including Oscar-winning screenwriter and director Paul Haggis, who offer their perspective on the actions of the organisation's leaders past and present. It follows the story from its roots in the mind of founder L Ron Hubbard through to its rise in popularity in Hollywood and beyond. Pretty much all of it has been denied by the Church of Scientology and probably their alien overlords too.