ten o'clock
`` Was my presence required at home , sir ? '' asked Algernon , in a tone of surprise , at the same time pulling out his watch . `` It is not late . Just ten o'clock . '' `` Late or not late , that is not now the question . I have to ask you -- I insist upon your telling me -- at what house in this neighborhood you spend your time ? '' There was an ominous pause .