When Cissie accidentally buys a crystal ball, Dolly foretells misfortune, especially for Flora, but after Cissie lets in a man claiming to be the window-cleaner but is actually a burglar, Flora is the only resident not to have been robbed. She sets out to find the culprit but ends up attacking a policeman, whom she mistakes for the thief, thus bringing credence to Dolly's prophecy.