The Black Door. Horror, #17

The Black Door is a chilling young adult horror novel set in a fog-soaked coastal mansion where secrets are locked away-literally. When sixteen-year-old Mara Quinn discovers a sealed black door in her grandmother's basement, she awakens something that knows her voice, her memories, and her deepest guilt. As the house begins to change and reality fractures, Mara must confront a terrifying truth: the monster behind the door may already be part of her.
Dark, psychological, and unsettling, this story explores identity, fear, and what happens when the past refuses to stay buried.