Tionsphere

Perfect for fans of Divergent, Snowpiercer and The Peripheral, Tionsphere will leave you stunned and curious about the limits of technology and the fragility of society. 

A thousand years ago, mankind escaped the rising oceans by building Tion—an expansive network of concentrical spheres suspended above the flooded Earth. Designed as a haven for the elite, Tion promised salvation. But that promise has long since faded in the lower levels where the masses live. 

Caitlyn is one of the many trapped in the Fives, where life is controlled by a crumbling global processing system that once kept Tion up and running efficiently. Now, as the system falters, chaos spreads, and the illusion of safety begins to shatter. 

When Caitlyn accidentally discovers a daring conspiracy linking her with the shadowy figure Pazel, she realises that Tion’s collapse may not be a coincidence. It may have been planned all along.

As groups clash and the truth about Tion’s origins comes to light, Caitlyn must find her way through a world on the verge of destruction. Can she uncover all of Tion’s secrets in time to do something about it? Or will humanity’s last haven become its grave? 

With its rich world-building, unforgettable characters, and an unsettling vision of the future, J.C. Gemmell’s Tionsphere is a must-read for fans of the dystopian and thrillers. This story is about endurance, loss, and the dangerous draw of dominance in a place where paradise was never meant to last.