Everest Sherpa Warned This Father And Son Three Times. The Father Said: I Promised My Son.

Richard Holt made his son a promise: they would stand on the summit of Everest together. Their Sherpa, Ang Dorji, warned him twice. The cardiac data was clear. The oxygen saturation was wrong. The heart rate was wrong. Richard said: I promised my son. At 8,700 meters, 106 meters from the summit, his heart went into arrhythmia. His son caught him as he fell. Ang Dorji spent 9 hours bringing them both down. At the hospital Richard said: I'm sorry. James said: you're my dad. This is the forensic timeline of what a promise costs at altitude. LAST KNOWN POINT — Where the trail ends, the truth begins.