Instinctively, his eyes and mine met, and, at that moment, there was established between us an understanding that was in strong contrast to the surrounding turmoil, which now exceeded all limits, as the highly wrought up spectators realised that these statements, if corroborated, destroyed one of the strongest points which had been made by the prosecution.

This caused a stay in the proceedings until order was partially restored, and the judge's voice could be heard in a warning that the court-room would be cleared of all spectators if this break of decorum was repeated.
Meanwhile, my own mind had been busy.

I had watched Arthur; I had watched Mr.Moffat.The discouragement of the former, the ill-concealed elation of the latter, proved the folly of any hope, on my part, that Carmel would be spared a full explanation of what I would have given worlds to leave in the darkness and ignorance of the present moment.

To save Arthur, unwilling as he was, she was to be allowed to consummate the sacrifice which the real generosity of her heart drove her into making.
Before these doors opened again and sent forth the crowd now pulsating under a preamble of whose terrible sequel none as yet dreamed, I should have to hear those sweet lips give utterance to the revelation which would consign her to opprobrium, and break, not only my heart, but her brother's.
Was there no way to stop it?
The district attorney gave no evidence of suspecting any issue of this sort, nor did the friendly and humane judge.
Only the scheming Moffat knew to what all this was tending, and Moffat could not be trusted.

The case was his and he would gain it if he could.
Tender and obliging as he was in his treatment of the witness, there was iron under the velvet of his glove.