Boo Radley, one of the main (though mostly invisible) characters of To Kill a Mockingbird, has actually not changed since Dill's arrival to Maycomb. What has changed is the children's perception of him once they begin finding items in the secret knothole. Prior to his reclusive behavior, Boo had been a normal teenager. But when he got into some trouble with the law, Boo's father locked him away in the Radley house. It was then that Boo changed. But, as Jem and Scout would soon find out, Boo was not the crazed ghoul that neighborhood rumors portrayed. The owner of the Indian head pennies found in the tree was still a mystery, and Boo Radley may not have immediately come to mind as a giver of gifts, but the prized coins did get the kids to thinking about Boo more and more.