just days before halloween, a first-year student’s mysterious disappearance beneath hogwarts marks the return of an ancient shape-shifting entity that has slept beneath the black lake for centuries, feeding on fear and taking the form of its victims’ worst nightmares. as more students vanish and the castle becomes consumed by eerie supernatural events, students and professors must uncover hogwarts’ darkest secrets and confront the creature deep beneath the castle before their growing terror makes it unstoppable