"The Outsider" is a novel by Stephen King that blends elements of horror and crime fiction. The story begins with the brutal murder of a young boy in a small town, leading to the arrest of a well-respected local teacher, Terry Maitland. As the investigation unfolds, evidence suggests that Terry is both guilty and innocent, creating a complex mystery. As the narrative progresses, a supernatural element emerges, revealing a shape-shifting entity that can mimic others. This creature, known as the Outsider, complicates the case and challenges the characters' understanding of reality, ultimately forcing them to confront their deepest fears.