Uncle Dynamite is a novel by P.G. Wodehouse, first published in the United Kingdom on 22 October 1948 by Herbert Jenkins, London and in the United States on 29 November 1948 by Didier & Co., New York. It features the mischievous Uncle Fred, who had previously appeared in Uncle Fred in the Springtime (1939).
Frederick Altamont Cornwalis Twistleton, fifth Earl of Ickenham, known to all as Uncle Fred, is on the loose once again (Lady Ickenham having decamped for a wedding in Trinidad), and Reginald ("Pongo") Twistleton, his long-suffering nephew (and Drones Club member) has every right to be petrified.
Uncle Fred has just arrived at Ashenden Manor, home of Sir Aylmer Bostock, Pongo's future father-in-law. Pongo is already in residence and has committed two rank floaters: accidentally smashing a whatnot from Sir Aylmer's collection of African curios, and (in the course of demonstrating how Brazilian natives kill birds with rude slings) smashing a coveted bust of his host.
Pongo's solution is to replace the busted bust with another one, abstracted from Ickenham hall. But unknown to him, the replacement bust was fashioned by his former fiancée Sally Painter, and conceals valuable jewellery that a friend of hers was planning to smuggle through New York Customs.
Sally tries to replace the bust with another of Sir Aylmer she sculpted (but had had returned to her, after an unfortunate incident relating to her brother Otis' publication of Sir Aylmer's memoirs), but this comes to naught, and both busts end up in Sir Aylmer's collection room.
Uncle Fred is unruffled by this setback and decides to infiltrate the house as an imposter. Having met Bill Oakshott (an unassuming young man who is the actual owner of Ashenden Manor, but who shrinks from confronting and displacing his bombastic, overbearing uncle Sir Aylmer) on the train, Uncle Fred contrives to get invited to the house—under the name of Major Brabazon-Plank. Unfortunately, the local Constable, Harold Potter, happens to have grown up with Major Plank (and also happens to remember arresting Uncle Fred and Pongo at the dog races under the names of Edwin Smith and George Robinson). Potter, intimately tied to the household through his fiancée, the housemaid Elsie Bean, becomes suspicious, and watches the house.