What is Scout's fantasy regarding Boo Radley?

Scout believed that Boo Radley was a madman. Scout, Dill, and Jem made up countless skits throughout their summers together, many including a plan to coaxe Boo out to see what he actually looks like. Since Boo is so shy that he never comes outside, the citizens of Maycomb grow suspicious and circulate rumors. Scout hears these and therefore assumes Boo Radley is a sinister lunatic, as everyone in Maycomb claims him to be.