four o'clock
He has n't been here for six weeks , by the way . Can you throw any light on his absence ? '' I made a friend that afternoon . When the car came back at four o'clock , Challis sent it away again . `` I shall probably stay down here to-night , '' he said to the butler , and to me : `` Can you stay to dinner ? I must convince you about this child . '' `` I have dined once to-day , '' I said .