Revelation (Netherspace #3)

It wasn't much of an army to save Earth from alien, pre-cog domination. Only three people: an heiress, a sociopathic artist and their leader, a female licensed assassin. But time has run out. The artificial intelligences - alien artefacts - that run Earth and its colonies are going mad. Long held human grudges, suspicions and fears have erupted in violence throughout the world.

Earth's own pre-cogs have seen the trio victorious... maybe. For Kara Jones, the assassin, it is a time of chaos made worse by the absence of Tatia Nerein, the heiress now warrior who is following her own dangerous path across alien worlds, and Marc Keislack, who stepped into netherspace, the dimension that allows star travel. Kara searches for a way to snatch her people back from a hostile galaxy even as she is assailed by doubts. But loyalty is everything and she will sacrifice anything to find her comrades and complete a mission she barely understands.

And ultimately discover the truth about the aliens... a revelation no greater than the truth she learns about herself.