"Leave It to Psmith" is a comic novel by P.G. Wodehouse. The story takes place at Blandings Castle, where various intrigues occur within the extended family of Lord Emsworth. The main character is Psmith (here called Ronald Eustace rather than Rupert as in previous books), who inveigles himself into the castle to woo girls, foil crooks, unmask imposters, baffle haughty aunts, and steal valuable necklaces. Psmith's good friend Mike is also involved in the story, as he needs financial help. The plot revolves around the recovery of a valuable necklace, and the book follows the typical Wodehouse romance style.