The fourth volume of the poetic, page-turning European masterpiece about one woman's fall through the cracks of time.
 
Tara Selter is one of many. In a sprawling villa on the outskirts of Bremen, Tara Selter is starting to settle into a new kind of eighteenth of November. Her days with Henry, Ralf and Olga revolve around the daily routines of practical chores: gathering provisions, splitting firewood.

But one morning, there are five new arrivals at their wrought-iron gate. As more people continue to arrive, their home fills with movement, voices fill the air; a flurry of people asking questions, sharing their eighteenths of November. Slowly, they settle into a new routine and Tara begins to breathe a little easier.

Could they create a new world inside the eighteenth of November?
 
Shortlisted for the International Booker Prize and Winner of the Nordic Council Prize for Literature, On the Calculation of Volume IV is 'Absolutely, absolutely incredible.' Karl Ove Knausgård' A total explosion.' Nicole Krauss'Unforgettable.' Hernan Díaz'Breathtaking.' Chetna Maroo'Brilliant.' Jon McGregor' Absolutely marvellous.' Lauren Groff
 
Release date:  9 Apr 2026