Far Empire (Outlanders #23)

When the world blew out in 2001, the secrets locked in its darkest corridors became the answer to humanity's survival. Now, more than two centuries later, a mysterious Imperator prepares to seize his birthright from the nine hybrid barons fighting each other for domination of the planet. All that stands between freedom and extinction is a renegade force of exiles who are prepared to challenge the ancient warring entities thrusting mankind into a horrifying future . . .

Heart of the World

Waging a covert war that ranges from a subterranean complex in the desert to a forgotten colony on the moon, former magistrate Kane, brother-in-arms Grant and archivist-turned-warrior Brigid Baptiste find themselves pawns in a stunning strategy of evil. A beautiful hybrid carries an unborn child -- a blueprint for hope in a dark world. She seeks Kane's help, unwittingly leading them into a trap from which there may be no escape . . .