Clouds in a Summer Sky (The Batch Magna Novels Book 4)

The fourth book in the Batch Magna series. In the third book, The Batch Magna Caper, it is seen that the Commander’s wife Priny has arthritis, a condition not at all improved by sitting on a river. They take up Humphrey’s offer of a straight swap: their boat, the Batch Castle, for one of the Masters’ Cottages facing their beloved river.
The Castle is restored to river worthiness. It starts plying successfully as the Cluny Steamboat Company to Shrewsbury and back, and by doing so takes a good deal of profit away from a taxi firm in a local border town. The English owner of the firm, Sidney Acton, enlisting the aid of two corrupt Welsh councillors, plots against the new venture.