An alien artifact’s mysteries could spark humanity’s collapse in the second novel of the Geodesica Duology from the New York Times–bestselling authors.

Revolution spreads like wildfire through humanity’s interstellar empire, sparked by the opening of Geodesica and the destruction of an entire inhabited system. But who was ultimately responsible? And who will pay the price?

Melilah Awad and Palmer Eogan delve deeper into Geodesica’s ancient alien labyrinth than anyone has ever dared, hoping to unravel its secrets before the hunter-killers from Earth bring them down. Former Exarch of Bedlam, Isaac Forge Deangelis, finds his grip on sanity slipping as his very reason for existing is ripped from him. While a rebel Exarch and Palmer Horsfall, grieving for her lost sister, form an alliance that might tear humanity’s interstellar empire apart . . .

Praise for the Geodesica Duology

“Splendid fun, brimming with heroes, villains, chicanery, neat imaginative details, some seriously cool space battles, and one of the most mind-twisting alien artifacts ever imagined.” —Alastair Reynolds, award-winning author

“Williams and Dix have a flair for combining slam-bang adventures, intriguing characters and cutting-edge scientific and philosophical speculations, resulting in books that elevate your adrenaline and your intellect. This latest series is no exception to their reign.” —Paul di Filippo, author of The Big Get-Even

“Williams and Dix are writing first-class MMPB space opera, chock full of what we’ve come to hope for; antagonists, allies and alien artifacts in perfectly balanced doses.” —Agony Column