Sarah suspects her mother of reading her post and answering the phone in her part of the house while she's out, but Russell's the one who comes up with a way to find out.
Clare has been working away from home for a while, so Sarah thinks about renting out her room, and Eleanor has definite ideas about the quality of tenant they should be seeking.
Eleanor intends to show off her social skills by giving a party, but Sarah is not on the guest list. Unfortunately, she involves Vera Polling in the preparations.