about midnight
`` I suppose you did n't doze at all , '' he said tentatively , `` while you were sitting up waiting for the telephone message . '' `` Oh , no , sir ! I am always very wakeful about that time . I 'm a bad sleeper , especially in the neighborhood of the sea , and I generally read in bed until somewhere about midnight . '' `` And did any message come ? '' `` No , sir . '' `` No .