Sue Ellen Moves In & The Perfect Brother

Sue Ellen Moves In: Rumors are circulating about the new family that has moved in and Buster thinks that they may be aliens, even after he meets Sue Ellen. When Buster's mom invites Sue Ellen over for dinner, he finds out that Sue Ellen is not an alien, but just a kid who has lived in various places around the world.
The Perfect Brother: The Brain is spending the weekend with the Reads because his parents are going to an ice cream convention. Arthur thinks this will be like having a brother around, but the Brain is neat, finishes his homework early, and reads to D.W., making Arthur look bad. However, Arthur discovers that the Brain is not so neat when the Brain invites Arthur over.