In 2017, when Alex Honnold made his stunning free-solo ascent of Yosemite's El Capitan, he was taking an unimaginable risk: nearly three thousand feet of climbing without any ropes or safety equipment. But was the climb made even riskier by the filmmakers who accompanied him?

In "What if He Falls" filmmakers Elizabeth Chai Vasarhelyi and Jimmy Chin take us inside the process of documenting Honnold's quest for climbing glory - and the ethical calculus of filming a friend who could, with the slip of a finger, plummet to his death.