Exclusive: Caitríona Balfe is set to join the ensemble of Apple Original Films upcoming pic Tenzing, which already stars Tom Hiddleston and Willem Dafoe. Jennifer Peedom is directing the film. Peedom has a close relationship with the Tenzing family and the Sherpa community following her acclaimed documentary, Sherpa.

Oscar-winning producer See-Saw Films (The King’s Speech) is producing Tenzing, about the inspirational life of Sherpa Tenzing Norgay and his summit of Mount Everest in 1953 alongside fellow outsider New Zealander Edmund Hillary. Balfe will play ‘Jill Henderson,’ a friend of Tenzing who helped organize trips up Mount Everest.

Tibetan born Tenzing Norgay, alongside New Zealand mountaineer Edmund Hillary, both outsiders on a British Expedition, defied insurmountable odds to achieve what was once thought impossible, reaching the summit of the world’s tallest mountain, Mount Everest. After six previous attempts, Tenzing risked everything for one final venture. He had to navigate treacherous...