Full Moon by P. G. Wodehouse

When the moon is full at Blandings, strange things happen: among them the commissioning of a portrait of The Empress, twice in succession winner in the Fat Pigs Class at the Shropshire Agricultural Show. What better choice of artist, in Lord Emsworth’s opinion, than Landseer. The renowned painter of The Stag at Bay may have been dead for decades, but that doesn’t prevent Galahad Threepwood from introducing him to the castle – or rather introducing Bill Lister, Gally’s godson, so desperately in love with Prudence that he’s determined to enter Blandings in yet another imposture. Add a gaggle of fearsome aunts, uncles and millionaires, mix in Freddie Threepwood, Beach the Butler and the gardener McAllister, and the moon is full indeed.