An epic mystery in a universe of starships and sorcerers...

Wizard-detective Aurora Blacknova arrives to meet a client promising the greatest mystery in the universe, but finds an empty starship with no passengers or crew. A note left in her client's cabin leads to an android serving a ten-thousand-year prison sentence for rebellion.

But Eva Orion is no ordinary rebel. She was imprisoned for stealing a heretical book claiming two machine-sisters created the android race, only to be betrayed by their own children. The Blackstars have ruled as machine-gods ever since and will stop at nothing to ensure no one discovers their treachery.

Aurora has no choice but to break Eva out of prison as it comes under attack from a pirate lord bent on seizing the holy text for himself. Chased by ghostly star-galleons and android assassins, Aurora and Eva race to stop the Great House of Blackstar before they trigger a prophecy that could destroy the Imperium...