Donnelly produced a copy of the Bertillon picture.
"What?" exclaimed Bentley, as he glanced at it and then at the name and history on the back. "Annie Grayson? Why, she is known as the queen of shoplifters. She has operated from Christie's in London to the little curio-shops of San Francisco. She has worked under a dozen aliases and has the art of alibi down to perfection. Oh, I've heard of her many times before. I wonder if she really is the person we're looking for. They say that Annie Grayson has forgotten more about shoplifting than the others will ever know."
"Yes," continued Donnelly, "and here's the queer part of it. The clerk was ready to swear that he had seen the woman in the store at some time or other, but whether she had been near the counter where the necklace was displayed was another matter. He wasn't so sure about that."
"Then how did she get it?" I asked, much interested.
"I don't say that she did get it," cautioned Donnelly. "I don't know anything about it. That is why I am here consulting Professor Kennedy."
"Then who did get it, do you think?" I demanded.
"We have a great deal of very conflicting testimony from the various clerks," Donnelly continued. "Among those who are known to have visited the department and to have seen the necklace is another woman, of an entirely different character, well known in the city." He glanced sharply at us, as if to impress us with what he was about to say, then he leaned over and almost whispered the name. "As nearly as I can gather out of the mass of evidence, Mrs. William Willoughby, the wife of the broker down in Wall Street, was the last person who was seen looking at the diamonds."
The mere breath of such a suspicion would have been enough, without his stage-whisper method of imparting the information. I felt that it was no wonder that, having even a suspicion of this sort, he should be in doubt how to go ahead and should wish Kennedy's advice. Ella Willoughby, besides being the wife of one of the best known operators in high-class stocks and bonds, was well known in the society columns of the newspapers. She lived in Glenclair, where she was a leader of the smarter set at both the church and the country club. The group who preserved this neat balance between higher things and the world, the flesh and the devil, I knew to be a very exclusive group, which, under the calm suburban surface, led a sufficiently rapid life. Mrs. Willoughby, in addition to being a leader, was a very striking woman and a beautiful dresser, who set a fast pace for the semi-millionaires who composed the group.
Here indeed was a puzzle at the very start of the case. It was in all probability Mrs. Willoughby who had looked at the jewels in both cases. On the other hand, it was Annie Grayson who had been seen on at least one occasion, yet apparently had had nothing whatever to do with the missing jewels, at least not so far as any tangible evidence yet showed. More than that, Donnelly vouchsafed the information that he had gone further and that some of the men working under him had endeavoured to follow the movements of the two women and had found what looked to be a curious crossing of trails. Both of them, he had found, had been in the habit of visiting, while shopping, the same little tea-room on Thirty-third Street, though no one had ever seen them together there, and the coincidence might be accounted for by the fact that many Glenclair ladies on shopping expeditions made this tea-room a sort of rendezvous. By inquiring about among his own fraternity Donnelly had found that other stores also had reported losses recently, mostly of diamonds and pearls, both black and white.
Kennedy had been pondering the situation for some time, scarcely uttering a word. Both detectives were now growing restless, waiting for him to say something. As for me, I knew that if anything were said or done it would be in Kennedy's own good time. I had learned to have implicit faith and confidence in him, for I doubt if Craig could have been placed in a situation where he would not know just what to do after he had looked over the ground.
At length he leisurely reached across the table for the suburban telephone book, turned the pages quickly, snapped it shut, and observed wearily and, as it seemed, irrelevantly: "The same old trouble again about accurate testimony. I doubt whether if I should suddenly pull a revolver and shoot Jameson, either of you two men could give a strictly accurate account of just what happened."
No one said anything, as he raised his hands from his habitual thinking posture with finger-tips together, placed both hands back of his head, and leaned back facing us squarely.
"The first step," he said slowly, "must be to arrange a 'plant.' As nearly as I can make out the shoplifters or shoplifter, whichever it may prove to be, have no hint that any one is watching them yet. Now, Donnelly, it is still very early. I want you to telephone around to the newspapers, and either in the Trimble advertisements or in the news columns have it announced that your jewellery department has on exhibition a new and special importation of South African stones among which is one—let me see, let's call it the 'Kimberley Queen.' That will sound attractive. In the meantime find the largest and most perfect paste jewel in town and have it fixed up for exhibition and labelled the Kimberley Queen. Give it a history if you can; anything to attract attention. I'll see you in the morning. Good-night, and thank you for coming to me with this case."
It was quite late, but Kennedy, now thoroughly interested in following the chase, had no intention of waiting until the morrow before taking action on his own account. In fact he was just beginning the evening's work by sending Donnelly off to arrange the "plant." No less interested in the case than himself, I needed no second invitation, and in a few minutes we were headed from our rooms toward the laboratory, where Kennedy had apparatus to meet almost any conceivable emergency. From a shelf in the corner he took down an oblong oak box, perhaps eighteen inches in length, in the front of which was set a circular metal disk with a sort of pointer and dial. He lifted the lid of the box, and inside I could see two shiny caps which in turn he lifted, disclosing what looked like two good-sized spools of wire. Apparently satisfied with his scrutiny, he snapped the lid shut and wrapped up the box carefully, consigning it to my care, while he hunted some copper wire.
From long experience with Kennedy I knew better than to ask what he had in mind to do. It was enough to know that he had already, in those few minutes of apparent dreaming while Donnelly and Bentley were fidgeting for words, mapped out a complete course of action.
We bent our steps toward the under-river tube, which carried a few late travellers to the railroad terminal where Kennedy purchased tickets for Glenclair. I noticed that the conductor on the suburban train eyed us rather suspiciously as though the mere fact that we were not travelling with commutation tickets at such an hour constituted an offence. Although I did not yet know the precise nature of our adventure, I remembered with some misgiving that I had read of police dogs in Glenclair which were uncomfortably familiar with strangers carrying bundles. However, we got along all right, perhaps because the dogs knew that in a town of commuters every one was privileged to carry a bundle.
"If the Willoughbys had been on a party line," remarked Craig as we strode up Woodridge Avenue trying to look as if it was familiar to us, "we might have arranged this thing by stratagem. As it is, we shall have to resort to another method, and perhaps better, since we shall have to take no one into our confidence."
The avenue was indeed a fine thoroughfare, lined on both sides with large and often imposing mansions, surrounded with trees and shrubbery, which served somewhat to screen them. We came at last to the Willoughby house, a sizable colonial residence set up on a hill. It was dark, except for one dim light in an upper story. In the shadow of the hedge, Craig silently vaulted the low fence and slipped up the terraces, as noiselessly as an Indian, scarcely crackling a twig or rustling a dead leaf on the ground. He paused as he came to a wing on the right of the house.
I had followed more laboriously, carrying the box and noting that he was not looking so much at the house