Legal thriller books are a sub-genre of literature characterized by suspenseful, gripping narratives that revolve around legal matters, typically courtrooms and trials. They are predominantly aimed at adult audiences and often incorporate elements of mystery and science fiction. These books are classified under the broader category of mystery books, providing readers with complex, plot-twisting stories that engage their problem-solving capabilities. The narratives might involve crime, detection, and legal proceedings, often intertwined with elements of science fiction, adding an unconventional spin to the conventional legal thriller genre.