"Yes, she's there," said Juan Ballester; and there she was, as plain as a pikestaff--Olivia Calavera. I was not surprised. Ballester never troubled about such trifles as consistency. He wanted her, so he invited her. Nevertheless, I could have danced a pas seul. For though Olivia could hardly slip out of her own house in any guise without detection since she had no visitors, she would have a good chance of escaping from the throng of guests at the President's party. I left Juan Ballester with a greatly lightened heart. I looked at my watch. It was not yet eleven. Full of my idea, nothing would serve me but I must this moment set it in motion. I went downstairs into the Square. Though the night was hot, I had slipped on an overcoat to conceal the noticeable breastplate of a white shirt, and I walked quickly for half a mile until I came opposite to a high and neglected building, a place of darkness and rough shutters. This was the Opera House. Beside the Opera House was a little dwelling. I rang the bell, and the door was opened by a tall, lean gentleman in a frock-coat. For the third time that night good luck had stood my friend.
"Mr. Henry P. Crowninshield," I said, "the world-famous impresario, I believe?"
"And you, Mr. Carlyon, are the President's private secretary?" he said coldly.
"Not to-night," said I.
With a grunt Mr. Crowninshield led the way into his parlour and stood with his finger-tips resting on the table and his long body bent over it. Mr. Crowninshield came from New York City, and I did not beat about the bush with him. I told him exactly the story of Olivia and Juan Ballester.
"She is in great trouble," I concluded. "There is something which I do not understand. But it comes to this. She must escape. The railways are watched, so is her house. There is only one way of escape--and that is on the seventeenth, the night when the Ariadne calls at Las Cuevas and the President gives his party."
Mr. Crowninshield nodded, and his long body slid with a sort of fluid motion into a chair.
"Go on, sir," he said; "I am interested."
"And I encouraged," said I. "Let us follow the Señorita's proceedings on the night of the seventeenth. She goes dressed in her best to the President's party. She is on view to the last possible moment. She then slips quietly out into the garden. In the garden wall there is a private door, of which I have a key. I let her out by that door. Outside that door there is a closed, inconspicuous carriage waiting for her. She slips into that carriage--and that is where you come in."
"How?" asked Mr. Crowninshield.