3Edge of the Map is equal parts inspiring, dramatic, and heartbreaking. One of America's greatest high altitude mountaineers, Christine Boskoff was at the top of her career when she and her partner died in an avalanche in 2006. Charismatic, principled, and humble, Boskoff was also a deeply loved role model to her climbing partners and the Sherpa community.

Edge of the Map traces the sharp twists and turns in Boskoff's life, from her early years as a Lockheed engineer, through her first successes in the climbing world, to her purchase of Seattle-based Mountain Madness after owner and climber Scott Fischer died in the 1996 Everest disaster. Her life was one of constant achievement mixed with personal tragedy. The story follows Boskoff as she perseveres and moves on to even bigger peaks, earning acclaim as a world-class mountaineer, then later as she finds an alpine partnership with legendary Colorado climber Charlie Fowler.