Alarm bells start ringing among the staff at Gillies Hospital when Jonathan threatens to sing in the Student's Revue. And after some drugs go missing, there's a suspicion that Joyce be hiding a secret.

Sheila reacts with misgivings when her 18-year-old son announces that he plans to stay with a girl for half-term.

Sheila and Jonathan club together to buy an anniversary present for George Rope-Wynne and his wife - but the engraver makes a terrible mistake.

After Sheila is burgled, some of her belongings turn up at the hospital.

Everyone tries to persuade Sheila to take up an invitation to go to Australia on a lecturing trip.