Spire Nine

by Gabrielle Brogdon

Five hundred years ago, when lethal levels of radiation filled the atmosphere, humans took to the spires. No one in the nine sky-high structures is allowed outside, except for the Envoys from Spire Nine—eight of the lucky few whose genes have adapted to survive the radiation for short periods of time. Once a year, the Envoys cross from one spire to another to share information and remind each isolated community there’s a world outside their walls.

Evy Connor-Ash has the Envoy gene. The role is her purpose, her destiny. She was named after it, for Builders’ sake. But there’s only one open slot on the Envoy team, and to claim it, she’ll have to beat Spire Nine’s golden boy, Aidan Reilly-Johns, who’s been pressured his whole life to take the title as his own.

But when the chosen Envoy reaches the world two miles away, the people on the spire aren’t what they expected. Now, the Envoy must decide whether to keep what they’ve discovered a secret or risk everything by telling their world what they know.

461 pages, Kindle Edition

Published October 6, 2026

About the author

Gabrielle Brogdon is a novelist most well known for the YA dystopian novel The Chosen Sun. She graduated from The University of Texas at Austin and currently resides in Indiana.
To learn more, visit www.gabriellebrogdon.com