about eleven o'clock
`` Do n't you see it all ? That note was a warning to him . He 's a spy and the red-haired man is after him . '' None of us slept that night though Tish did a very courageous thing about eleven o'clock , when she was ready for bed . I went with her . We had put our dressing-gowns over our nightrobes , and we went back to the car containing the spy . He had not retired , but was sitting alone , staring ahead moodily .