Twelve o'clock
`` Oh , Mr Webster , I say , please do n't say that . He never took it , really he did n't . '' `` Come , that 'll do . Twelve o'clock to-morrow , unless I get the pencil , you 'll get a call from the police . Off you go . I 've had enough of you . '' And the bookseller , whose temper had gradually been evaporating during the visit , bustled our heroes out of the shop , and slammed the door behind them .