11 p.m.
No , what we can say is this . If he had been shot after the hour at which the world begins to get up and go about its business , it would have been heard , and very likely seen too . In fact , we must reason , to begin with , at any rate , on the assumption that he was n't shot at a time when people might be awake ; it is n't done in these parts . Put that time at 6.30 a.m. Manderson went up to bed at 11 p.m. , and Martin sat up till 12.30 . Assuming that he went to sleep at once on turning in , that leaves us something like six hours for the crime to be committed in ; and that is a long time . But whenever it took place , I wish you would suggest a reason why Manderson , who was a fairly late riser , was up and dressed at or before 6.30 ; and why neither Martin , who sleeps lightly , nor Bunner , nor his wife heard him moving about , or letting himself out of the house . He must have been careful .