Tom was feeling very guilty since his aunt only cried instead of whipping him when she found out that he had snuck out in the middle of the night.  As Tom and Huck expected, the news about the graveyard scene flew faster than they could imagine.  Everybody and their dog was at the scene, as well as Tom and Huck (acting like they knew nothing of went on there).  Muff Potter was caught and arrested, and now Tom's conscience is eating at him because he knows that he should tell everybody the truth about who really killed Doctor Robinson.