Besides, I cannot penetrate how he came to be present at this stormy interview.

He has evaded, he thinks successfully, my questions on this head; but if, as I believe, it was dishonorably obtained, I am the less inclined to trust either him or his intelligence.

If Marie were indeed present, which he insists she was, her testimony is the most important of any.
If she confirm Don Luis's statement, give the same account of the interview between her husband and Stanley, and a reason for this suddenly proclaimed enmity; if she swear that he did utter such threatening words, I will neither hope nor try to save him; he is guilty, and must die.

But if she deny that he thus spoke; if she declares on oath that she knew of no cause for, nor of the existence of any enmity, I care not for other proofs, glaring though they be.
Accident or some atrocious design against him, as an envied foreigner, may have thrown them together.

Let Marie swear that this Garcia has spoken falsely, and Stanley shall live, were my whole kingdom to implore his death.