Lisa sets out to restore the tarnished reputation of Springfield�s first female inventor. To find her invention, she scours an abandoned asylum and a restaurant that caters to men. Bart joins Lisa at the asylum, stealing one of the homicidal patient�s notebooks, and bragging to the boys at school that he wrote the entries himself. This revelation causes Homer and Marge to believe he is a sociopath, which Bart decides to use to his advantage until things go too far.