Summarize the tire incident. Who do you suppose was inside the Radley house, and what did Scout hear?

Dill comes to Maycomb for the summer again, full of stories about train rides and his father, whom he claims to have finally seen. The three try to start a few games, but quickly get bored. Jem rolls Scout inside an old tire, but he pushes so hard that it ends up in the Radley's yard. Terrified, Scout runs back home, but leaves the tire behind. Jem has to run into the yard and retrieve the tire. Dill thinks Boo Radley died and Jem says they stuffed his body up the chimney. Scout thinks maybe he's still alive. They invent a new game about Boo Radley. Jem plays Boo, Dill plays Mr. Radley, and Scout plays Mrs. Radley. They polish it up over the summer into a little dramatic reenactment of all the gossip they've heard about Boo and his family, including a scene using Calpurnia's scissors as a prop. One day Atticus catches them playing the game and asks them if it has anything to do with the Radley family. They deny it, and Atticus replies, "I hope it doesn't." Atticus's sternness forces them to stop playing, and Scout is relieved because she's worried for another reason: she thought she heard the sound of someone laughing inside the Radley house when her tire rolled into their yard.

Boo was in the Radley house..... and he was laughing!