Geoffrey and Caroline Robertson are having a dinner party to celebrate ten successful years of Mighty Midget Vacuum Cleaners, the company he jointly owns with Tim McArthur, and to add spice to the evening they decide to make it a murder mystery dinner. They are joined by a variety of employees and their partners. And Geoffrey has a special surprise – he has invited the well-known crime novelist Agatha Crusty (pronounced Croosty) to join them. She is in the area promoting her latest book and agrees to be guest of honour.
But on the evening of the dinner, their remote Victorian house finds itself in the centre of a storm so bad that the river floods and they are cut off. Worse, the power fails and in the darkness one of the guests is murdered. But since everybody else was together when the murder was committed, they are as perplexed as they are worried. And when another murder happens in the same way it is no laughing matter… except this is an Agatha Crusty murder mystery so there are laughs a-plenty. And also a genuine mystery that will keep an audience guessing as well as laughing.