four o'clock Monday
morning
His absorption in the story had made him overlook this ramification of it . He could see that it was highly probable that Professor Brierly might be in as great danger as was any member of the Tontine group . The pilot of the amphibian , when he taxied up to the wharf , told Jimmy that arrangements had been made that he land the plane on a field belonging to John Mallory , amateur sportsman and airman , whose estate was close to the home of William Flynn , at Pleasantville . The plane dropped down out of the sky at four o'clock Monday morning , Eastern Standard time . Professor Brierly , as was his wont when traveling in a conveyance that he could not drive himself , was fast asleep . He had slept throughout the journey in spite of the roar of the whirling blades that had swept them through the skies . A light touch on his arm woke him as they taxied to the end of the field .