John Mason is an extreme rock climber and mountaineer. When his wife dies giving birth to their child, Mason cannot deal with the tragedy. He leaves his newborn daughter in his sister's care to seek ever greater exploits on the vertical walls of the Rockies. After Mason's partner disappears in an avalanche and he suffers terrible frostbite, his life spirals further into disarray. While endeavouring to pull his life together, strange events occur: He unwittingly discovers a plot to destroy strategic infrastructure in Canada and the United States. Mason must transcend his limits in order to fi nd salvation and protect the lives of thousands. The supply of oil and gas in North America hangs in the balance - hangs as precariously as Mason's fi ngertips and toes on the steep and loose limestone of The Suicide Wall, high in the wilderness of the Canadian Rockies.