Bear Grylls invites "She-Hulk" and "Orphan Black" star Tatiana Maslany on a journey across Wyoming's Laramie Mountains. Tatiana admits that she's fearless on the screen, but she can't tap into that same bravery in the real world. So, Bear challenges Tatiana to conquer massive cliff rappels, menacingly icy cliffs, and a zero-degree cold shock to the body to help her overcome her fears.