eleven o'clock
`` There 's always something every day . '' Maggie had an uncomfortable feeling that her aunt had in some way mysteriously defeated her by this sudden abandonment of all protest , and for a moment the mysterious house closed around her , with its shadows and dim corners and the little tinkling Chapel hell in the heart of it . But the thought of Martin dissolved the shadows , and off she went . They agreed to meet every morning at eleven o'clock outside Hatchards , the bookseller 's , in Piccadilly . They chose that place because you could look into a bookseller 's window for quite a long time without seeming odd , and there were so many people passing that no one noticed you . Their habit then was to walk to the corner of the Green Park and there climb on to the top of a motor omnibus and go as far as they could within the allotted time . Maggie never in after life found those streets again .