"If it is necessary," he assured them, "I can easily prove that I have had nothing to do with all this. I have not been out of Bogota for a month or more. Besides, I have the strongest business reasons for wanting the safe return of David Meudon to this country. As for Mr. Parmelee; I repeat--I never heard of him before. But, I agree with our friend here; the disappearance of these two men has nothing to do with the Panama trouble. It is something else. There is a mystery about it. I have no doubt it can be solved." "You have the clew?" demanded Leighton. "I didn't say that." "Well?" "Perhaps I know some one here--a woman--who could help us." But that evening, after the departure of his visitors, Raoul Arthur found the little house in the Calle de las Flores tenantless, and learned that the woman, known to the neighborhood as La Reina de los Indios, had left Bogota, with all her household effects, a week before. XI IN WHICH ANDREW IS FOUND Puzzled at not finding Sajipona, uncertain how to take up the promise he had given in regard to her, an altogether unexpected turn of events awaited Raoul at Leighton's hotel the next morning. Andrew Parmelee had been found. In the custody of two delighted police officers the missing schoolmaster, bewildered, quite speechless from his nocturnal experience, had made his appearance, scarcely an hour before Raoul's arrival. When, thanks to Miranda's persistent prodding, backed by the calm questioning of Leighton and Una's sympathetic ministrations, he found his tongue, the account Andrew gave of his adventure was so wildly improbable that his friends were inclined to believe he had been the victim of some temporary mental delusion. But this did not answer the threefold question: what had brought on his delusion, how had he escaped the vigilant Miranda, and how had he fallen into the hands of the police. The two officers gave a simple statement of what, so far as they knew, had happened.