What is Force of Nature about?

Five women from the same financial services firm set off on a corporate team-building hike through the Giralang Ranges in Victoria. Three days later, four return. Alice Russell is missing. Federal agent Aaron Falk, who was running Alice as a confidential informant against the firm's suspected financial crimes, is drawn into the search — and into a separate investigation of what happened among those five women during three days in the bush. Harper structures the novel in parallel: the present search-and-rescue and the hiking trip itself, which she reconstructs day by day.

This is a book about what happens when social façades fall away under physical duress. The five women are not friends; they are colleagues with histories, resentments, and secrets. As their supplies dwindle and they lose their way, the dynamics that normally stay submerged start to surface. Harper is careful not to make any single woman a villain. The threat is distributed — the group's failure is a collective one, shaped by who kept quiet, who pushed too hard, and who already had reasons to fear Alice. The wilderness is rendered with the same physical precision Harper brought to drought in The Dry: the cold, the rain, the disorientation of terrain that looks the same in every direction.

Where The Dry was more contained, Force of Nature is structurally more complex, and that complexity is both its strength and its weakness. The dual timeline and the ensemble cast require more juggling, and there are stretches where the corporate fraud subplot sits awkwardly against the survival drama. But Harper's control of atmosphere remains exceptional, and the relationships among the women are drawn with enough texture that the reveals land with weight rather than surprise alone.

If you read The Dry first, Force of Nature is a satisfying next step, and Falk benefits from the extra history. Taken on its own, it works as a smart, atmospheric thriller with a strong sense of place. The pacing is similar to the first book — measured, patient — so if that frustrated you before, it will here too. But for readers who liked what Harper did in the Australian landscape with moral complexity and group psychology, this is worth the hike.