ten o'clock
Field regarded the brown , eager , clever face and steadfast eyes of the questioner shrewdly . `` I shall be delighted , sir , '' he said heartily , `` with one proviso -- that you regard me as your senior officer and commander in this business . Military strategy is one thing , the hunting of criminals quite a different thing . I shall start from the Yard before ten o'clock , and even then I shall not make my way to Wandsworth direct . We are dealing with an exceedingly clever lot , and it is just possible that I may be watched . Therefore I shall disguise myself , and you had better do the same . Then you can meet me at eleven o'clock where you like . ''