To cheer up his depressed friend "Sippy" Sipperley Bertie encourages him to steal a policeman's helmet. This lands him in  jail while he was expected to stay with the Pringle family. Bertie goes in his place but is found out by Sir Roderick  Glossop. On Jeeves' advice Bertie visits Aunt Vera, Sippy's means of financial support, to explain. She takes it all-in good  humour, having recently been harassed by Egbert, an overzealous local constable who turns out to be a cousin of Jeeves.