About Directed by Oscar winner Alex Gibney and based on the book by Pulitzer Prize winner Lawrence Wright, Going Clear profiles eight former members of the Church of Scientology-whose most prominent adherents include A-list Hollywood celebrities-shining a light on how the church cultivates true believers, detailing their experiences and what they are willing to do in the name of religion. One of the most talked about films at the 2015 Sundance Film Festival, this powerful documentary highlights the Church's origins, from its roots in the mind of founder L. Ron Hubbard to its rise in popularity in Hollywood and beyond. Going Clear is a provocative tale of ego, exploitation, and lust for power. (C) HBO