They reached the lift, which came to them in a few seconds, unoccupied save for the youth who ran it. Clodagh kept up bravely until she was seated in the taxi, and could have kept up until the end without too great an effort, for her collapse had made her feel rested. It was not, however, the girl's metier to "keep up." The task was but half accomplished. The hardest part was to come. She knew--or thought she knew--that O'Reilly had the papers, that they were in New York; not only in New York, but in his private sitting room at the Dietz Hotel. They were in some hiding-place there; and for an instant he had feared her knowledge of its existence. He had expected her to try, while his back was turned, to steal its contents. Clo's nimble brain, deducing all this from what had happened, deduced something else as well. The man would have had no fear if the secret were impossible for an outsider to learn. It could not be impossible. It couldn't even be difficult, if she might have solved the puzzle while his back was turned. For her, O'Reilly's uneasiness was a hopeful sign. Somewhere on the window side of his private parlour at the Dietz the papers which Angel needed were hidden. Each second during the girl's slow progress to the lift, her descent, and her short walk to the taxi, was spent in sorting out these deductions. Those big black eyes of Clodagh Riley's had not been given her in vain. One swift glance during the cold-water treatment had shown her many details useful to remember. On one side of the window was a desk. In the desk was a drawer, and the key thereof was in the keyhole. It seemed improbable that secret papers should be kept in such a place, but circumstances might have forced O'Reilly to leave them there. On the other side of the window was a kind of buffet, with glass doors and shelves and a closed cupboard, but Clo had less hope of this than of the desk. There might be a less obvious hiding hole than either, perhaps a sliding panel in the wall. There must in any case be a key, and that key must be on the person of O'Reilly. She would have to use all her wits to get it while they were together in the taxi! And there was the key of the suite to get also; but that would be easier. She had seen O'Reilly take the big key from a table, as they went by, slipping it into the pocket of his dinner jacket. Forced to support his half-fainting guest, he had not put on an outer coat, so the key was within reach of clever and determined fingers. Clodagh's were determined, and--she hoped--clever. With this design burning in her head and tingling in her hands, she decided to faint again as they started for home, and keep O'Reilly occupied every inch of the way. "I'm afraid--I'm not so strong--after all----" she sighed, as the taxi door shut, and proceeded to "flop" like a large rag doll. Her head fell on the man's breast, and rolled across to his left arm, her hat askew.