The White Mountain town of Harrow, New Hampshire, was preparing for its annual Harroween Festival. The air smelled of wood smoke and the sweet rot of fallen leaves. Pumpkins glowed on porches, bonfires crackled in the clearings, and families wandered streets beneath maples ablaze in crimson and gold.

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It was everything a New England autumn should be.

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But beyond the town’s edge lay the Harrowing Hills. For generations, parents had warned their children never to wander there after dark. They spoke in hushed voices of the Shadow Door and the ancient things that slept behind it.

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Thirty-seven years ago, a boy named Jack Levi watched his sister disappear into the hills. When he tried to save her, a swirling mass of ravens swallowed him whole.

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Now it’s happening again.

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Children are vanishing. Those who are found bear wounds so horrific that even seasoned detectives struggle to look. Ravens with milk-white eyes gather on fences and power lines, watching in absolute silence. Detective Joseph Rodale follows a trail of evidence that defies explanation, while Horton Mudgett finds himself entangled in a bloodline curse, an inheritance of sacrifice to an ancient hunger that has fed upon Harrow for centuries.

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Beyond the Shadow Door lies the Crescent Realm, a place where forests awaken, forgotten gods stir, and Reverend Jack Levi must confront a cosmic horror known as the King in Yellow.

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As Halloween draws near, buried secrets claw their way out of shallow graves. Ancient debts come due. And the veil separating the living world from something far older begins to tear.

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Some doors were never meant to be opened.
Some paths should never be crossed.
And some hungers were never meant to be fed.