about eleven o'clock
`` Well , one night , '' Sir Arthur went on , leaning back in his chair and staring into vacancy , `` she went out to spend the evening , as she told me , with a friend ; as a matter of fact it was Raleigh 's sister . She had been drinking a little during the afternoon , but I felt that she would be safe there , for both Raleigh and his sister knew of this miserable failing of hers . Unfortunately , I had a lot of work to do that evening , and I was unable to go with her . I went about eleven o'clock to bring her home . I found she had not been there at all . I went back and sat up the whole night , I need n't tell you Vane what my thoughts were . She did n't come .