The Abominable by Dan Simmons

Set in the early 1920s, the story follows a daring expedition to Mount Everest, where a group of climbers, including a young mountaineer, a seasoned guide, and a war hero, embark on a perilous journey to uncover the mystery behind the disappearance of a previous expedition. As they ascend the treacherous slopes, they encounter not only the brutal forces of nature but also sinister human threats, leading to a gripping tale of survival, courage, and the relentless pursuit of truth amidst the chilling backdrop of the world's highest peak.