A fractured timefold core. A haunted forest. And something monstrous stalking through the seams of time.

Stranded in 14th-century England after a catastrophic timeline collapse, Max, Chloe, and Nick have nothing but wreckage—scraps of a broken core and no way home. Their search for answers leads them into the heart of Sherwood Forest, a place of whispered legends and darker truths, where something unnatural moves through the trees.

There, they encounter Robert of Locksley and his band of outlaws—archers, warriors, and rebels hunted by the crown. But the forest holds worse than kingsmen. From fractured seams in time emerge the Blightborn—twisted creatures of shadow—and the riders who command them: spectral assassins bent on corrupting history itself.

To survive, Max must repair the core using only the tools of the Middle Ages—no tech, no shortcuts, just raw ingenuity and whatever the past will give. Their only chance lies in breaching a fortress, decoding medieval defenses, and building a lifeline from the ruins of time.

But even if they escape, the journey is far from over. A final rift awaits—one that will hurl them toward a forgotten island, where old ghosts rise and the truth behind their mission finally surfaces.

The Hollow Between Worlds is a pulse-pounding fusion of time travel, historical immersion, and rising dread. Perfect for fans of Rick Riordan, Jonathan Stroud, and Margaret Peterson Haddix, it's a story of fractured timelines, haunted legends, and the courage to reclaim what history tried to erase.