So matters stood; even the successful solution of Doola's puzzle, which the prince had easily accomplished, passed almost unnoticed. Imagine, then, the general surprise when, on the seventh day, Ablano returned as mysteriously as he had vanished. To all inquiries as to his absence Ablano remained deaf. With him there had come three strangers, who from their dress and appearance were inhabitants of the great desert to the north of Parrabang.