Running Wild with Bear Grylls: The Challenge: Season 2, Episode 4

2 - 4: Troy Kotsur in the Scottish Highlands

Bear takes his first deaf guest, Academy Award-winning actor Troy Kotsur, on an adventure in the Scottish Highlands. Bear and Troy must find a new way to communicate as they push themselves to the limits, traversing perilously steep mountains and raging rivers, but it's the silence that builds their strongest bond.