ten o'clock
` Yes , madam , at Rantremly Castle . ' ` You are going there ? ' she demanded , almost breathlessly . ` Yes , madam , I leave on the ten o'clock train tomorrow morning . I am commissioned by Lord Rantremly to investigate the supposed presence of the ghost in that mouldering dwelling . I am allowed to bring with me whatever assistants I require , and am assured that no one in the neighbourhood can be retained who dare sleep in the castle . You know the place very well , having lived there , so I shall be glad of your assistance if you will come .