"Oh," Mrs. Barrister suddenly exclaimed, "I quite forgot to tell Mr. Astro something that I'm sure is important! It's a clue we discovered while we were searching the library after we had found the scratches and the broken lock of the case. Here it is!" She drew a scrap of paper from her purse and handed it to him. It was evidently the corner of a letter, and bore a few words written in violet ink.
The palmist held it lightly in his hand for a moment, then asked, "Has any one else had this, except you?"
"Oh, yes. Mr. Barrister himself found it, and, of course, he examined it carefully; but he could make nothing of it."
Astro cast his eyes to the ceiling, and then down on the paper again. He pressed it to his forehead, then handed it to his assistant.
"I shall have to wait until the last influences are evaporated, leaving the original personality of the writer to assert itself." He whirled quickly about, placed his hand to his lips, and coughed.
"Oh, Mrs. Barrister!" Valeska exclaimed. "Look at this paper again for a moment. Come to the light by the window here. It seemed to me I saw a watermark that showed through when I held it to the light. See if you can see it." As she spoke she drew the woman into the bay-window so that she stood with her back to the room.
Astro stepped quickly over to a bookcase against the wall, and, keeping his eyes carefully on Mrs. Barrister, reached to the top of one of the shelves. Four or five books protruded about an inch from the rest of the line. Astro's hand curved over these and down
