[2] Aunt Agatha intends to engage Bertie to "a nice quiet girl" named Aline Hemmingway.
After Sidney loses money at the races, he borrows £100 from Bertie with Aline's pearl necklace on deposit.
Charles Edward Biffen ("Biffy") cannot find a girl to whom he was engaged, named Mabel.
Mabel is now a British burlesque dancer and showgirl who performs in the theatre.
Disaster ensues when Biffy sees Mabel dancing and singing in the theatre.