Greywick is no longer changing one person or one street at a time. The population itself has become unstable. Apartment blocks empty overnight while other districts acquire residents with complete histories. Families remember incompatible children. Government systems produce several equally valid population totals, and the differences are shrinking.
As more ordinary people begin to notice the contradictions, Elara Kest and her allies discover that awareness may accelerate the very phenomenon they are trying to understand. Meanwhile, Celyn Ruskett starts slipping out of records and memory, Tamsin Kest remembers childhoods that cannot both have happened, and evidence emerges that the Continuity Directorate has spent decades creating controlled disappearances to prevent larger Reconciliations.
With Greywick approaching a number predicted in records centuries apart, Elara must decide whether continuity can still be defended by arithmetic—and whether a person from another history is any less real than the one standing beside her.
Population Zero is the fifth novel in The Night Census, an atmospheric supernatural conspiracy thriller about memory, identity, bureaucracy, and a city beginning to remember more than one past.
