about ten o'clock
`` How do you know I am later than usual to-night ? '' he asked . `` Because , generally , you come out about ten o'clock , and it is nearly twelve now . '' `` How do you happen to know I generally come out about ten o'clock ? '' `` Oh , '' the Boy answered coolly , `` I watched you . ' I have been studying your habits in order to find out what manner of man you are ; and I think you 'll do , '' he added patronizingly , with a wise shake of the head . `` I guess you were looking for me too , were n't you ? ''