five o'clock
`` Then your noble deed , Grace , would be noble indeed , '' added Madaline . `` I guess Miss Clark can marry whom she pleases . She 's very pretty . '' `` And her dad is rich too , so I do n't believe we can solve our mystery that way , '' finished Cleo , and none of the three had quite decided just how she would like to end it when the five o'clock bell from the `` Home '' out Clinton way chimed a warning hour . `` So late ! '' exclaimed Grace , `` and I have to practice before tea . '' `` And I have to help mother , for Martha 's out , '' added Madaline .