In Ascension is an astonishing novel about a young microbiologist, Leigh, who embarks on an investigation of an unfathomable deep vent in the ocean floor. This journey leads her to encompass the full trajectory of the cosmos and the passage of a single human life.

Leigh grew up in Rotterdam, where she was drawn to the waterfront as an escape from her unhappy home life and volatile father. Enchanted by the undersea world of her childhood, she excels in marine biology and travels the globe to study ancient organisms. Upon the discovery of a trench in the Atlantic Ocean, she joins the exploration team, hoping to find evidence of the Earth's first life forms. However, what she finds instead calls into question everything we know about our own beginnings.

Her discovery takes her to the Mojave desert and an ambitious new space agency. As she is drawn deeper into the agency's work, Leigh learns that the Atlantic trench is only one of several related phenomena from across the world, each piece linking up to suggest a pattern beyond human understanding. Faced with the dilemma of leaving behind her declining mother and younger sister, Leigh must make an impossible choice: to remain with her family or to embark on a journey across the breadth of the cosmos.

In Ascension explores the natural world with the wonder and reverence we usually reserve for the stars. It is a compassionate, deeply inquisitive epic that reaches outward to confront the greatest questions of existence and looks inward to illuminate the smallest details of the human heart. It shows how, no matter how far away we might be and how much we have lost hope, we will always attempt to return to the people and places we call home.