Telluride‘s surprise secret screening on Sunday turned out to be Nathan Fielder and Lance Oppenheim’s Elizabeth Holmes documentary.

You Can See Everything had its world premiere at the festival on Sunday night. The event featured the biggest lines of the festival so far, and attendees were asked to check in their phones.

The official logline for the doc, from A24, is: “Thirty-four days before she’s sent to prison, notorious Silicon Valley founder Elizabeth Holmes invites a skeptical film crew to document her every move. What begins as an intimate portrait of an enigmatic felon becomes a mind-bending three-year journey into the abyss. From boundary-pushing directors Nathan Fielder and Lance Oppenheim comes You Can See Everything.”

A teaser was released Sunday night, where Holmes insists: “I’m not that person. I can promise you that. I don’t have anything to deceive you on; of course, I’m not deceiving you. I’m engaging with you as a human being, hm. Why would I deceive you? There’s no reason for me to do that. … I’m always being real.”

The movie is set for release in October.

Watch the teaser below.