Katie is in a much better mood after meeting Marie and hearing Ms. Lang’s animal rights speech at the protest. Before heading to Ms. Lang’s to cat sit, she stops by the bodega to pick up some cat treats, and Mr. B gives them to her on the house. Katie asks how he manages to stay in business when he is constantly giving things away. He reveals that his brother is billionaire Benito Benton: When their grandparents passed away, they each received half of the money. Mr. B spent lots of his money buying the building and giving away donations because he likes to do things that make him happy, rather than to make money.

Katie spends the night playing boardgames with the cats. At midnight, there is no sign of Ms. Lang. They turn on the news and discover that the Mousetress has been caught by the Eastern Screech.

At first, Katie denies that it could mean Ms. Lang is the Mousetress. However, the cats reveal a secret room containing computers, files, a large map of the city, and a spare Mousetress costume.