Answer:
In To Kill a Mockingbird, children live in an inventive world where mysteries abound but little exists to actually cause them harm. Scout and Jem spend much of their time inventing stories about their reclusive neighbor Boo Radley, gleefully scaring themselves before rushing to the secure, calming presence of their father, Atticus. As the novel progresses, however, the imaginary threat that Boo Radley poses pales in comparison to the real dangers Jem and Scout encounter in the adult world. The siblings’ recognition of the difference between the two pushes them out of childhood and toward maturity, and as they make that transition, Boo Radley, their childhood bogeyman, helps serve as link between their past and their present.