In this science fiction novel, the fourth installment of its series, humanity ventures through the alien gate to a new world, Ilus, where settlers and a corporation clash over the planet's resources. As tensions escalate into violence, a team from an aging ship is sent to mediate the conflict, only to face unforeseen alien technologies and a looming biological catastrophe. The crew must navigate the political turmoil, prevent a war, and survive the deadly alien artifacts, all while dealing with the personal demons that haunt them and the broader implications for human expansion into the universe.

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