Who would be the very person to help Miss Verinder in raising money privately on the Diamond?
Rosanna Spearman.

No young lady in Miss Verinder's position could manage such a risky matter as that by herself.

A go-between she must have, and who so fit, I ask again, as Rosanna Spearman?
Your ladyship's deceased housemaid was at the top of her profession when she was a thief.

She had relations, to my certain knowledge, with one of the few men in London (in the money-lending line) who would advance a large sum on such a notable jewel as the Moonstone, without asking awkward questions, or insisting on awkward conditions.

Bear this in mind, my lady; and now let me show you how my suspicions have been justified by Rosanna's own acts, and by the plain inferences to be drawn from them." He thereupon passed the whole of Rosanna's proceedings under review.