The latest resident of a police retirement community is found dead.

Tom and Chrissie Larkton are baking superstars. They run a bakery from an old water mill, but rumor has it that they are looking to expand, and that is not popular in the area. Is that why someone is apparently trying to poison Chrissie?

The residents of the village of Elverton-Cum-Latterly gather for the annual domino tournament. This year, the tournament has interim competition from a drag queen event to benefit charity. This creates friction - and soon one of the domino players is found dead. But who was behind it? It's up to Barnaby to find the answer.