six o'clock
He came out of the phone booth , fired up his pipe again , and strolled back to the bar for one more drink before he went back to Porter 's ranch . * * * * * Malcom Porter took one of the darts from the half dozen he held in his left hand and hurled it viciously at the target board hung on the far wall of the room . _ Thunk ! _ `` Four ring at six o'clock , '' he said in a tight voice . _ Thunk ! Thunk ! Thunk !