To kill a mocking bird, Reflection

I was surprised by the fact that Mr Ewell would attack the children of the Finch family. I was also surprised by the fact that Boo Radley was the one the killed him. If i was the writer i would also put Boo Radley in the end, and make Mr Ewell do something bad. But i was pleasantly surprised by the way it happened and the fact that it linked together well. If i was the writer, i might have ended with Boo Radley coming out because Dill and Scout caused some kind of trouble and Boo Radley comes and solves the problem or help them.