“But how came you to be waiting in the lane? And who were you waiting for?” I persisted.

“By what right do you question me, Senhor Harcliffe?” she asked, drawing back so that I could no longer look into her eyes.

“By no right at all, Lesba. Neither do I care especially whether you are attached to the Empire or the Republic, or how much you indulge in political intrigue, since that appears to be the chief amusement of your countrymen. But I love you. You know it well, although you have never permitted me tell you so. And loving you as I do, with all my heart, I am anxious to untangle this bewildering maze and understand something of your actions since that terrible morning when I parted with you at Dom Miguel’s mansion.”

She laughed, and the laugh was one of those quaint flashes of merriment peculiar to the girl, leaving one in doubt whether to attribute it to amusement or nervous agitation. Indeed, where another woman might weep Lesba would laugh; so that it frequently puzzled me to comprehend her. Now, however, she surprised me by leaning over me and saying gently:

“I will answer your question, Robert. My brother is at the mansion, and in danger of his life. I was waiting with the carriage to assist him to escape.”

“But how do you know he is in danger?”

“He sent me word by a carrier-pigeon.”

“To be sure. Yet there is one more thing that troubles me: why were you in Rio, riding in the Emperor’s carriage with the spy Valcour?”

“It is simple, senhor. I went to Rio to assist in persuading Dom Pedro to visit the vault.”

“Knowing it was empty?”