The novel revolves around Smilla Jaspersen, a woman of Greenlandic-Inuit and Danish descent living in Copenhagen, who investigates the mysterious death of a small Inuit boy who falls from the roof of their apartment building. Despite the authorities ruling it as an accident, Smilla's understanding of the Arctic snow and ice, her intuition, and her relentless pursuit for truth lead her to uncover a much darker, dangerous conspiracy involving powerful corporations and government agencies.

This novel delves into the gripping tale of a cold case that resurfaces, challenging the skills of Copenhagen's Department Q, a division dedicated to solving long-forgotten crimes. The story centers around the mysterious disappearance of a promising young politician five years prior, believed to have perished in a tragic accident. However, new evidence suggests a much darker fate. The head of Department Q, Detective Carl Mørck, along with his assistant Assad, embarks on a relentless quest to uncover the truth. Their investigation leads them into a sinister world of captivity and desperation, where they must race against time to save a victim whose time is running out. This thrilling narrative combines suspenseful twists, complex characters, and the stark realities of crime's impact on human lives.