Louisa, Kentucky, is swallowed by a dense, unnatural fog one autumn night. Fourteen-year-old Salem Stone leans on the windowsill of his bedroom, watching the mist creep through the town. Soon, he realizes that the fog is alive. It whispers his name, moves with intent, and hides eyes that glow faintly red beneath the river's surface. The next morning, his classmate Hannah Price is missing. Her bike is found near the river, her shoes left behind, but no sign of her remains. As Salem and his friends Eli Turner and Hannah herself uncover the truth, they discover that the fog is patient, intelligent, and learning-feeding on fear and hesitation. Guided by a mysterious pulse of light beneath the river, the three must confront the darkness directly. Standing together against the living fog, they face terrifying shapes, whispers, and the ever-watchful red eyes. The river and the fog carry memory, and even after surviving, the threat remains. Louisa is saved-for now-but Salem knows the battle is only beginning. The Fog Over Louisa is a story of courage, friendship, and the unseen forces that linger in familiar places. It is a suspenseful, character-driven horror novel suitable for readers who enjoy small-town supernatural thrillers.