Eleven o'clock
He waited for some little time . The lights went out one by one . Then , taking a direction opposite to that in which the doctor had gone , he branched off to the right and skirted the wall until he came to the clump of trees near which he had hidden his motor-cycle on the day before . Eleven o'clock struck . He calculated the time which it would take the doctor to cross the kitchen-garden and make his way into the house . `` That 's one point scored ! '' he muttered .