When former intelligence officer Edward Snowden revealed in 2013 that the NSA was seizing the private records of billions of people, he helped spark the most significant reforms to U.S. surveillance policy since 1978—and his story read like a science fiction novel. In a special virtual conversation, Snowden will join former WIRED editor-in-chief Katrina Heron for a discussion about technology and its potentially dystopian future. Their conversation will be followed by a screening of Gattaca—the science fiction flick about space travel and eugenics—at the Alamo Drafthouse Cinema. For more information on WIRED's 25th anniversary Festival and other events throughout the weekend, visit wired.com/25.