"You'll pardon me for going into my own history, Mr. Hammer, but it's necessary here. My father was an archaeologist connected with the University of California, though he was usually afield, and as I accompanied him ever since my mother's death, ten years ago, you can see how I come to recognize your Arabic expressions yesterday."

Hammer grinned to himself, for there was a suspicion of dry humour in the girl's voice, and he knew that he was forgiven.

"Last year my father and Dr. Krausz were together in Greece, while I was preparing to take up work at Dresden Library. Mr. Hammer, what happened on that trip has never been discovered. I received a very hasty letter from my father, dated at Lisbon on his return to Germany, and this was followed by the news of his death. Dr. Krausz brought his body home, for we were living in Dresden, temporarily.

"In his letter my father had merely said that he was not well but had made a great discovery, and if anything happened to him I should write to Mr. John Solomon, a friend of his at Port Said, to whom he had already written in full. At the time I thought nothing of it, though I believe that he had some presentiment of his death; nor did I distrust Dr. Krausz when——"

"Good gracious, girl!" snapped out Hammer, startled. "You don't mean to say that Krausz was responsible for your——"

"No, no! Wait, please!" She laid a hand on his arm, withdrawing it instantly. "You see, father's death was a dreadful shock to me, and then I had to straighten up all his affairs besides going on with my work at the library. So I forgot all about father's discovery and writing this Mr. Solomon. There was no mention of such a man in his papers which Dr. Krausz turned over to me—after keeping some of them, as I now know."

"Then Krausz is not your guardian, as he told me?" broke in the American. In response to the girl's surprised glance he told her of the doctor's words.

"No; that was all a lie, Mr. Hammer. Of course, I never suspected that anything was wrong, for I used to see a good deal of him in Dresden, where he stayed to work on a book. Well, about three months ago he came to me offering me this position of assistant to him. I was naturally quite flattered, for he is really a big man in the world of science, Mr. Hammer, and of course I accepted. He told me only that he had found out about this place, and, as usual, I waited to be taken into his confidence when the time came.

"Well, while I was clearing things up at home I found father's letter, and it occurred to me that since I had to pass through Port Said I might as well write to this Mr. Solomon and ask him about father's discovery. I did so, and in return received a long cable telling me to say nothing to Dr. Krausz, but to trust implicitly in whoever showed me the letter I had written Mr. Solomon.

"I waited for the messenger, but none came until that day in London when the steamer was leaving. Then a fat little man with queer blue eyes rushed up, showed me the letter, and demanded the papers which the doctor had just sent me. Since the purser had directed him to me and there was no time to waste, I obeyed, although the papers contained directions as to what I was to do in the preliminary work. Fortunately, he cabled me their contents at Mombasa."