I can keep this from Arthur, only by buying him off. He asks a large sum; more than I can get together to pay him without having time. He refuses to make any abatement, because his threat is, that if he fails with me, he will come to you. Will you return with me and show him that you already know it? Will you return with me and try to prevail with him? Will you come and help me with him? Do not refuse what I ask in Arthur's name, though I dare not ask it for Arthur's sake!'

Little Dorrit yielded willingly. She glided away into the prison for a few moments, returned, and said she was ready to go. They went out by another staircase, avoiding the lodge; and coming into the front court-yard, now all quiet and deserted, gained the street.

It was one of those summer evenings when there is no greater darkness than a long twilight. The vista of street and bridge was plain to see, and the sky was serene and beautiful. People stood and sat at their doors, playing with children and enjoying the evening; numbers were walking for air; the worry of the day had almost worried itself out, and few but themselves were hurried. As they crossed the bridge, the clear steeples of the many churches looked as if they had advanced out of the murk that usually enshrouded them, and come much nearer. The smoke that rose into the sky had lost its dingy hue and taken a brightness upon it. The beauties of the sunset had not faded from the long light films of cloud that lay at peace in the horizon. From a radiant centre, over the whole length and breadth of the tranquil firmament, great shoots of light streamed among the early stars, like signs of the blessed later covenant of peace and hope that changed the crown of thorns into a glory.

Less remarkable, now that she was not alone and it was darker, Mrs Clennam hurried on at Little Dorrit's side, unmolested. They left the great thoroughfare at the turning by which she had entered it, and wound their way down among the silent, empty, cross-streets. Their feet were at the gateway, when there was a sudden noise like thunder.

'What was that! Let us make haste in,' cried Mrs Clennam.

They were in the gateway. Little Dorrit, with a piercing cry, held her back.

In one swift instant the old house was before them, with the man lying smoking in the window; another thundering sound, and it heaved, surged outward, opened asunder in fifty places, collapsed, and fell. Deafened by the noise, stifled, choked, and blinded by the dust, they hid their faces and stood rooted to the spot. The dust storm, driving between them and the placid sky, parted for a moment and showed them the stars. As they looked up, wildly crying for help, the great pile of chimneys, which was then alone left standing like a tower in a whirlwind, rocked, broke, and hailed itself down upon the heap of ruin, as if every tumbling fragment were intent on burying the crushed wretch deeper.

So blackened by the flying particles of rubbish as to be unrecognisable, they ran back from the gateway into the street, crying and shrieking. There, Mrs Clennam dropped upon the stones; and she never from that hour moved so much as a finger again, or had the power to speak one word. For upwards of three years she reclined in a wheeled chair, looking attentively at those about her and appearing to understand what they said; but the rigid silence she had so long held was evermore enforced upon her, and except that she could move her eyes and faintly express a negative and affirmative with her head, she lived and died a statue.

Affery had been looking for them at the prison, and had caught sight of them at a distance on the bridge. She came up to receive her old mistress in her arms, to help to carry her into a neighbouring house, and to be faithful to her. The mystery of the noises was out now; Affery, like greater people, had always been right in her facts, and always wrong in the theories she deduced from them.

When the storm of dust had cleared away and the summer night was calm again, numbers of people choked up every avenue of access, and parties of diggers were formed to relieve one another in digging among the ruins.