Boo Radley is introduced into the book during the end of the novel, but he is constantly being spoken about it. There are rumors going around the town of Maycomb saying that Boo tried to murder his own father & he is a madman / serial killer, Miss Maudie is the only person in novel so far that thinks Boo is innocent. So, Boo lives in the Radley House all by himself & is never seen. Scout, Jem & Dill have tried main times to try & get a look at Boo, but they have had no luck. Boo also leaves presents for Jem & Scout in a hole the Radley tree until his father, Mr Radley, put concrete in the hole. When Bob Ewell attacks the kids, Boo comes to save them & he stabs him up the guts with a kitchen knife. Scout sees that he's not a monster & Scout is the only person that Boo talks to, he says "Can you walk me home?" & she does & she never sees him again.