"I will be delighted to throw any possible light on the mystery of the castle. But first let us leave your brother in peace, to let me know why you came to America?"

Maria Theresa drew the locket from her reticule.

"This is what brought me."

"May I see it?" and the Duke held out his hand, ingratiatingly. "What a charming old antique!"

"No, Carlos. Rather you may see the locket, but not the memorandum in the back."

The Duke registered an expression of polite surprise.

"Memorandum?"

"Yes," and the Princess removed a small bit of paper from the ivory back, swinging it forward to her cousin's hand, on the long silver chain. The nobleman's dark face assumed a ruddier hue, as he caught the trinket in fingers which Jarvis noticed were trembling in tell-tale manner. Jarvis watched the two of them in silence.

"It's a curious old piece of work. And you came all the way to New York to get it?"

"Yes."