Twelve years after his classic travel narrative Annapurna Circuit Andrew Stevenson returns alone once again to the Himalayas on a deeply personal quest, a journey both corporal and spiritual. Narrowly escaping paralysis after shattering his spine in a motorbike accident weeks after his younger brother's untimely death, Stevenson's hike up to Everest Base Camp is as much introspective passage of healing as intriguing depiction of his fellow backpackers and the Sherpa people. Lying in a hospital bed in a morphine-induced state of hallucination after his accident, Stevenson promises himself to go back to the Himalayas, to heal. Five months after his mishap, and against all the odds, this recuperative solitary climb into high mountain valleys provides a spectacular backdrop to an emotional acknowledgment and acceptance of a lost sibling. Interlaced with the hardships of pushing to the edge of personal physical endurance and beyond, The Envelope: Walking up to Everest Base Camp is a richly rewarding read on every level.