The Light Within Darkness, Book 3 of the Space Unbound series.

Year 2218. A vast new region of space with its own network of interconnected voidoids has just been discovered, expanding humanity's prospects immeasurably. But a malevolent mastermind is on the loose, and he's claimed it all for himself and his twisted Posthuman empire. Now he's on a crusade to wipe out the human race and is cloning an invincible army of transhuman psychopaths to do the job. The Alliance must stop him, but no one knows where he is among the 50,000 stars scattered across the region's three million cubic light-years of space.

The Sun Wolf, with its zero-point drive, is the only ship with any chance of finding this sinister demigod before it's too late. The hunt begins with a cryptic clue that leads Commander Aiden Macallan and his hand-picked crew to uncharted star systems and exotic exoplanets. At the same time, Aiden's mate, renowned microbiologist Skye Landen, follows a promising clue of her own, risking a fate worse than death. But time is running out, and an unforeseen ally from another realm may be their only hope for saving humanity from extermination.