On June 8, 1924, George Mallory and Andrew Irvine set out to achieve the ultimate: reach the summit of Mount Everest. Nova Video Library: Lost on Everest details the discovery of Mallory's body nearly 75 years later. Many personal effects were discovered along with the body, leaving behind numerous clues that beg the question: Did Mallory and Irvine reach the top of Everest first, 30 years before Edmund Hillary and Tebzing Norgay? Watch the astounding archival footage of the expedition. Narrated by Rebecca De Mornay.