Shadow Walkers: What casts a shadow in the darkness?

Millfield is not an ordinary town. Beneath it lies something ancient, patient, and angry. Harrison Hollow knows the danger and why his grandfather built a concrete silo in his cornfield, not to store grain, but to seal a rupture between worlds of light and shadow. For a century, the structure held. Now it is crumbling. Civil engineer Phoebe Weaver is tasked with overseeing the demolition of the silo, but Harrison insists doing so will unleash the horror it was built to contain. Sentient sha...