There’s nothing especially revelatory contained within Alex Gibney‘s Going Clear: Scientology and the Prison of Belief (or just “the Scientology doc,” if you’re feeling compelled to go clear in your own way) and viewers who have previously read the source material — Lawrence Wright‘s nonfiction book of the same name — won’t be shocked by what the documentary contains, but what Gibney offers instead is a clearly designed crash course in understanding the so-called “prison of belief” that entraps the organization’s devotees. Crisply cobbled together from interviews (many from former Scientology members, including exceedingly high-ranking figures), stock footage, fresh looks at the various Scientology centers, and personal information, the film is a faithful companion to Wright’s book that also stands on its own, mainly because it’s put together so well. Gibney has collected an impressive area of interview subjects for the feature, and their various levels of indoctrination and information neatly layer the material. The most recognizable talking head of all is filmmaker Paul Haggis, who infamously left the Church of Scientology in 2009, and has spoken out about his decision ever since. Haggis is an interesting case study, and his story works on an almost microcosmic level. Gibney’s feature opens with his subjects discussing how they first got into Scientology, and Haggis’ story is the most recognizable: he wanted things, he heard they made things happen, he joined them. The repercussions, of course, could not have been foreseen.