Longlisted for the 2025 Stella Prize

Inga Simpson – The Thinning

Fiction · Hachette

About the Book

‘We haven’t always lived like this . . .’

Fin grew up by an observatory, learning about telescopes and planets, inspired by the passions of her parents, then leaders in their fields of astrophotography and astronomy. Those days are long over. Now Fin, her mother, Dianella, and a band of outliers live deep off the grid, always on amber alert and always ready to run.

In the outside world, things are not good: extinctions and a loss of diversity threaten what’s left of the environment. With a new disaster looming, Fin finds herself thrust into an unlikely partnership with a stranger who has appeared in their camp – one of a new breed of evolved humans, the Incompletes, who are widely distrusted. But the pair will need to work together during a dangerous journey if they are to play their part in an audacious plan to help restore the natural world – and humankind.

The Thinning is an electric and melancholy tale, disturbingly believable but ultimately – and surprisingly – hopeful.

– 2025 Stella Prize Judges

About the Author


Inga Simpson

Inga Simpson is an Australian novelist and nature writer. Her works have been longlisted and shortlisted for several prizes and awards including the Miles Franklin Literary Award, the Stella Prize, the ALS Gold Medal and the Fiction Indie Book Award.

Further Reading


Judges’ Report

Inga Simpson’s incandescent thriller The Thinning sees beyond the darkness. In its place she explores the light – the light of satellites, of surveillance and of the stars. This future is one where the skies are colonised ‘in the same way we once sailed ships to other countries and called it discovery.’ In a brilliant subversion of our relationship with light (‘Light is only darkness diluted’) Simpson pens a haunting ode to the ‘space between the stars’. Her meticulous skill as a nature writer is evident in the way she brings astronomy to life, where our threatened dark skies portend the crushing loss of memory, history and culture. Teenage protagonist Fin’s breakneck journey across Warrumbungle National Park (Gamilaraay Country) is interspersed with flashbacks of a decaying, disintegrating world, and her exhaustion is a visceral reminder of the consequences of the choices we make today. The Thinning is an electric and melancholy tale, disturbingly believable but ultimately – and surprisingly – hopeful.

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