J. S. Dewes returns to her science fiction action adventure series, the Divide, where The Expanse meets the Night's Watch.

The Sentinels have rallied under the leadership of Adequin Rake, and Cavalon Mercer has uncovered the horrifying genetic solution his grandfather is about to unleash on the unsuspecting outer colonies. Both Rake and Cavalon race against time to save the universe once again. They'll need every resource, every ally who might answer the call. It might not be enough.