A mysterious subspace signal draws the U.S.S. da Vinci into one of the most dangerous regions of space—the edge of a black hole known only as the Demon.

What begins as a routine investigation quickly becomes a desperate rescue mission when the Starfleet Corps of Engineers answers a centuries-old distress call from a Resaurian station suspended impossibly close to the event horizon. Perched on the brink of destruction for generations, the station hides secrets buried deep within the Demon’s gravitational shadow—secrets its inhabitants will do anything to protect.

As the da Vinci and her crew fight failing systems, impossible physics, and mounting suspicion, they uncover a truth that could cost them everything. Because the Demon is more than a black hole, and escaping its pull may require the ultimate sacrifice.

In the unforgiving depths of space, even Starfleet’s finest engineers may not be enough.