been simple enough to have put
on a mask on entering the room and subsequently have thrown it away. And
Miss Morton, frightened as she had been, might be totally unable to
identify her assailant. She had covered her tracks well. Was she then to
go free?

The matter of the typewriter Duvall put aside for the moment. The woman
might readily have a friend who possessed one--a hotel stenographer,
perhaps, who had permitted her to make use of her machine. But the seal
was a matter of more importance. His examination of the several
impressions had shown him that it was extremely well carved--a decidedly
expensive piece of work. Of course, the woman might have thrown it away
during her flight, but it seemed unlikely. What had she done with it?
The question was one to which he felt he must find an answer.

Again, with Grace's assistance, he examined the articles in the women's
suitcases, testing the backs of hairbrushes, the contents of powder
boxes, the interior of a cake of soap, a bottle of shoe blackening, but
the search was as unproductive of results as before. Duvall was forced,
against his will, to the conclusion that the woman had made away with
the seal, rather than run the risk of its being found upon her person.

"Is there anything more you want of us?" Miss Norman asked, when he had
again closed the suitcases. "If not, my friend and I would like to go."
She rose as though to take her departure.

"Yes. There is one thing more. You will have to go to Mrs. Morton's
hotel with me, so that her daughter may have an opportunity to identify
you. But it is far too early to start now. I will send out presently and
have some breakfast brought in."

It was beginning to grow light now. Duvall suggested to Grace that she
had better go out into the little kitchenette at the rear of the
apartment and see if she couldn't find the materials for preparing some
coffee. He himself sat down at the little writing desk, and proceeded
once more to examine its varnished surface with the greatest care. He
had thought, if the letters had been sealed here, there would in all
probability be some tiny spots of the black sealing wax upon the desk
top, but he could discover nothing. Presently he heard Grace calling to
him from the kitchen.

Directing Leary to keep an eye on the two women, he joined her at once.

"What is it?" he asked. "Have you discovered anything?"

"No, not exactly. But--what does that mean?" She pointed to a candle
whi