midnight
But Mr. Sleight had overlooked the logical effect of this discovery on the natural villainy of his tool . In the very moment of his triumphant execution of his patron 's suggestions the idea of keeping the treasure to himself flashed upon his mind . _ He _ had discovered it -- why should he give it up to anybody ? _ He _ had run all the risks ; if he were detected at that moment , who would believe that his purpose there at midnight was only to satisfy some one else that the treasure was still intact ? No . The circumstances were propitious ; he would get the treasure out of the ship at once , drop it over her side , hastily conceal it in the nearest lot adjacent , and take it away at his convenience . Who would be the wiser for it ?