<p>A butler named Keggs who, having overheard the planning of a scheme, later decides to try and make money out of his knowledge.<br>It features Percy Pilbeam, the unscrupulous head of the Argus Detective Agency, who first appeared in <i>Bill the Conqueror</i> (1924) and was in several other Wodehouse books, including a visit to Blandings Castle in <i>Summer Lightning</i> (1929).</p>