Frank Williams (the vicar from Dad's Army) plays dull librarian Horace Maddox who is looking for love. A mix up at the biographies section leads to Cissie accepting his proposal of marriage.
When Flora goes to church she gets a shock when the vicar reads out the banns of Cissie's impending nuptials.
Cissie is very upset and Flora is on the whisky shorts and now has to make plans to have the engagement broken off. They got to a marriage bureau to find a lady for Horace.
I was rather surprised that Cissie was so upset to find herself engaged. I thought she would be pleased and she certainly was envious at the end when someone else showed interest at the librarian.