Alone, at the top of the house, an unknown person approaching nearer and nearer--how could she escape?
There was no way of escape.
She did not even know whether that oblong mark on the ceiling was a trap-door to the roof or not.

And if she got on to the roof--well, there was a drop of sixty feet or so on to the pavement.

But she sat perfectly still, and when the knock sounded, she got up directly and opened the door without hesitation.

She saw a tall figure outside, with something ominous to her eyes in the look of it.
"What do you want ?" she said, not recognizing the face in the fitful light of the staircase.
"Mary?
I'm Katharine Hilbery!" Mary's self-possession returned almost excessively, and her welcome was decidedly cold, as if she must recoup herself for this ridiculous waste of emotion.

She moved her green-shaded lamp to another table, and covered "Some Aspects of the Democratic State" with a sheet of blotting-paper.
"Why can't they leave me alone ?" she thought bitterly, connecting Katharine and Ralph in a conspiracy to take from her even this hour of solitary study, even this poor little defence against the world.