Mona took from her pocket an envelope, and out of it she drew four Bank
of England notes. "Here it is--here are four one-thousand-pound notes.
I had it paid to me that way five years ago, and here--here it is," she
added, with almost a touch of hysteria in her voice, for the excitement
of it all acted on her like an electric storm.

"Well, we'll get to work at once," declared Kitty, looking at the notes
admiringly, then taking them from Mona and smoothing them out with tender
firmness. "It's just the luck of the wide world, as my father used to
say. It actually is. Now you see," she continued, "it's like this.
That letter you wrote him"--she addressed herself to Mona--"it has to be
changed. You have got to rewrite it, and you must put into it these four
bank-notes. Then when you see him again you must have that letter opened
at exactly the right moment, and--oh, I wonder if you will do it exactly
right!" she added dubiously to Mona. "You don't play your game very
well, and it's just possible that, even now, with all the cards in your
hands, you will throw them away as you did in the past. I wish that--"

Seeing Mona's agitation changing to choler, the Young Doctor intervened.
He did not know Kitty was purposely stinging Crozier's unhappy little
consort, so that she should be put upon her mettle to do the thing
without bungling.

"You can trust Mrs. Crozier to act carefully; but what exactly do you
mean? I judge that Mrs. Crozier does not see more distinctly than I do,"
he remarked inquiringly to Kitty, and with admonishment in tone and
emphasis.

"No, I do not understand quite--will you explain?" interposed Mona with
inner resentment at being managed, but feeling that she could not do