In Service with a Smile, the eighth Wodehouse novel set at Blandings Castle, Lord Emsworth's home is overrun with pesky intruders, from the noisy boys of the local Church Lad's Brigade camping at the lake to the curmudgeonly Duke of Dunstable, who is scheming to steal Emsworth's peerless pig. Fortunately, Uncle Fred (in his final appearance) is on hand to sort everything out.
This book is part of the Uncle Fred Books series and is book #4 in the series.