In this high octane, no holds barred episode, extreme survival expert Bear Grylls goes to Canada's snow covered Pacific Coast mountain range to explore incredible real life survival stories in this hostile, unforgiving terrain.

Bear Grylls enters the Guatemalan jungle to re-live the experiences of three groups of jungle survivors: A team of Mexican archaeologists are attacked by bandits, stripped of their belongings and forced across a dangerous river.

Bear Grylls heads to Morocco's searing Sahara Desert to explore gripping survival stories in this hostile, unforgiving terrain. Bear recreates the brute force of a Saharan sandstorm, scales crumbling desert cliffs and drinks the blood from a snake.

Bear Grylls heads to a dramatic canyon in North Africa and white water in Italy to explore three extraordinary stories of survival.

Bear Grylls explores the stories of three young men who all self-rescued from mountain ranges and impenetrable forest.

Bear looks back at the most memorable survival experiences he had to face from the series. But which situations did he pick out for the unique challenges they posed?