Nine o'clock
She had a sardonic smile , but there was diffidence in it , which showed , perhaps , that it was directed within . `` I 've saved one , '' she said , pointing to an extinguisher , `` in case there should be a fire in the night . '' A little later Susan Foley appeared at the door of the living-room . `` Nine o'clock , '' she announced calmly . `` Supper 's ready . We sha n't wait for Jane . '' When Jane Foley arrived , a reconnaissance proved that the martyrised detective had contrived to get away .