nine o'clock
`` You are right in believing David to be the best possible confidant , '' sighed the old lady as she returned the letter and telegraphic message to Grace . `` We can rely on him absolutely . '' `` I must go now . It is after nine o'clock . I will hurry to the nearest drug store for a special delivery stamp and mail the letter at once . I wish I might stay with you longer , but I feel as though I ought to go home . You do n't mind if I tell Mother and Father ?