ne, but you know who the other
is?"

Constance bit her lip.

"No?" he queried. "Then I'll show you."

He had taken from his pocket a bunch of oblong cards. Each bore, she
could see from the corner of her eye, a full face and a profile picture
of a woman, and on the back of the card was a little writing.

He selected one and handed it to Constance. Instantly she recognized
the face. It was Annie Grayson, with half a dozen aliases written after
the name.

"There!" he fairly snorted. "That's the sort of people your little
friend consorts with. Why, they call Annie Grayson the queen of the
shoplifters. She has forgotten more about shoplifting than all the rest
will ever know."

Constance longed to ask him what had taken him to the Grayson flat the
night before, but thought better of it. There was no use in angering
Drummond further. Instead, she let him think that he had succeeded in
frightening her off.

She went back to her own apartment to wait and worry. Evidently
Drummond was pretty sure of something, or he would not have disclosed
his hand to her, even partially. She felt that she must see Kitty
before it was too late. Then the thought crossed her mind that perhaps
already it was too late. Drummond evidently was working in some way for
an alliance of the department stores outside.

Constance had had her own ideas about Kitty. And as she waited and
watched, she tried to reason how she might carry them out if she had a
chance.

She had just been insured, and had been very much interested in the
various tests that the woman doctor of the insurance company had
applied to her. One in particular which involved the use of a little
simple instrument that fitted over the forearm had interested her
particularly. She had talked to the doctor about it, and as she talked
an idea had occurred to her that it might have other uses than those
which the doctor made of it. She had bought one. While she was waiting
it occurred to her that perhaps it might serve her purpose. She got the
instrument out. It consisted of a little arrangement that fitted over
the forearm, and was attached by a tube to a dial that registered in
millimeters a column of mercury. Would it really show anything, she
wondered?

There was a quick call on the telephone and she answered it, her hand
trembling, for she felt sure that it was something about the little
woman she had befriended.

Somehow or other her voice hardened as she answered the call