In chapters 19-20, they have just escaped and don't know where to go. So they walk and walk until they find the Boniface Estate. It looks deserted so they go in. They found out that the family would not be back for a few months. While they are there they read books, practice writing. Every week a neighbor came and checked to make sure the house was all neat and tidy. So the rats would do a good job of cleaning up the house. Then it came time to leave the Boniface Estate. As Nicodemus was telling the story Justin came in and said that Nicodemus was needed. So Mrs. Frisby left with Justin and they went to the main hall. In the main hall there was tons of things Mrs. Frisby had never seen before. They had carpet, electricity, and at the end and elevator. Mrs. Frisby was amazed.