Her composure grew with his loss of it.

"I hoped it wouldn't be necessary to remind you of your first visit here, but it seems it is."

That was it then—the source of her assurance—she meant to trade upon, to make capital of a professional secret. It was like her to remind him of an obligation, to attain her ends.

"I've not forgotten," he answered with an effort, "but the favor you ask is one I cannot conscientiously grant."

She laughed disagreeably.

"Since when has your conscience become a factor in your affairs?"

He could have throttled her for her insolence, but she gave him no chance to reply.

"Supposing I insist?"

"Insist?" Was she threatening him?

She answered coldly—