When you and your two friends make it 100 meters from the summit of a 21,000-foot mountain known as the Shark's Fin, only to turn back in a snowstorm, what do you do next? Spoiler alert: If you're world-class Alpinists Conrad Anker, Jimmy Chin and Renan Ozturk, you return three years later and try again. Such is the allure of Meru, the scariest Himalayan peak you've never heard of and the title of a documentary about the trio's harrowing attempts to scale it. Jon Krakaeur (Into Thin Air, Into the Wild) narrates the climbers' adventure: "You've gotta be able to ice climb, mix climb and ... do big-wall climbing at 20,000 feet. It's all that stuff wrapped in one package that's defeated so many good climbers ... and maybe will defeat everybody for all time. That, to a certain mind-set, has an irresistible appeal."