This novel tells the story of four Westerners who are kidnapped and taken to the mysterious Shangri-La, a utopian lamasery high in the mountains of Tibet. As they get to know their captors and the peaceful way of life in the lamasery, they must each decide whether or not they want to stay in this idyllic paradise that seemingly offers immortality, or try to escape back to their former lives. The story explores themes of time, happiness, and the often complex choice between the familiar and the unknown.

The novel is a thrilling adventure set in the 1950s, where a young British film assistant embarks on a perilous journey into the Himalayas to find his missing brother. Along the way, he encounters a hidden Tibetan kingdom, where he becomes entangled in a web of intrigue, romance, and political rebellion. As he navigates the treacherous landscape and the complexities of an ancient culture, he discovers a rare and beautiful artifact, the Rose of Tibet, which holds significant power and meaning. His quest becomes a transformative experience, challenging his endurance and reshaping his understanding of the world.

"The Crystal Horizon" is a gripping account of the author's solo climb of Mount Everest without the aid of supplemental oxygen, a feat never accomplished before. The book not only details the physical and mental challenges faced during the climb but also delves into the philosophical and spiritual journey the author undergoes. The narrative is interspersed with reflections on the history and culture of the Himalayas, the nature of mountaineering, and the author's personal beliefs and motivations.