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.