one o'clock
`` Go on with your work at once , and do n't let me have any more of this extraordinary behaviour . I ca n't think what has come to you . '' But Martha seemed incapable of resuming her ordinary calm . Whilst serving the one o'clock dinner -- which was very badly cooked -- she wept and sighed , and when her mistress had risen from the table , she stood for a long time staring vacantly before she could bestir herself to clear away . About three o'clock , having several times vainly rung the sitting-room bell , Mrs. Cross went to the kitchen . The door was shut , and , on trying to open it , she found it locked . She called `` Martha , '' again and again , and had no reply , until , all of a sudden , a shrill voice cried from within -- `` Go away !