Everest is a 2015 biographical survival film directed and produced by Baltasar Kormákur and written by William Nicholson and Simon Beaufoy. It stars an ensemble cast of Jason Clarke, Jake Gyllenhaal, Josh Brolin, John Hawkes, Robin Wright, Michael Kelly, Sam Worthington, Keira Knightley, Martin Henderson and Emily Watson. Based on the 1996 Mount Everest disaster in which eight climbers lost their lives, it focuses on the survival attempts of two expedition groups, one led by Rob Hall (Clarke) and the other by Scott Fischer (Gyllenhaal).