Due to a remark made by Duncan in his local Chinese restaurant, a party of Chinese communists comes to visit the hospital. Bingham, in particular, is convinced they are spies come to find how hospital equipment can be used to start wars, so there is panic when they all go missing. In fact they have been admiring the hospital's linear accelerator and put in an order for some for Chinese hospitals. They are then invited to watch an operation, which the paranoid Bingham almost sabotages, but the day ends well. However, it seems that Duncan has also been shooting his mouth off in his local Hungarian restaurant as well.

Envious of the Binghams' new house which they bought with financial help from their parents, Dick, Paul and Duncan consider buying a property. Dick and Paul offer six thousand to Major Woodnutt for his house in Primrose Crescent, which he says he will honour as an officer and a gentleman. However, when Duncan innocently puts in a higher offer he accepts that instead and eventually sells to a couple who put in an even higher bid. The house is lost but revenge presents itself when the major arrives at the hospital in need of an operation.