But with regard to his assertion that no one in his house could have tampered with the key, the Inspector saw that he was on more shaky ground. In the nature of the case, the diamond merchant would be less alert in dealing with the members of his own household than with his business acquaintances. Believing he was surrounded by friends, he would subconsciously be more ready to assume his precautions adequate. Was Mr. Duke’s belief that no one would touch the key not the real basis of his statement that no one had done so?
It seemed to French that here was a possibility that he had overlooked, and it was in the nature of the man that the moment he reached such a conclusion he began to consider a way of retrieving his error.
At first he thought of taking Mr. Duke into his confidence and asking him to assist him in some subterfuge by which he could enter the house. But presently he saw that it would be better if the old gentleman knew nothing of his plan, lest he might inadvertently warn a possible criminal.
For the same reason—that Mr. Duke might get to know of it—he decided he would be wiser not to undertake the business in person. But he knew the man for the job—a certain detective-sergeant named Patrick Nolan. This man was something of a Don Juan in his way, and had a positive genius for extracting confidences from the fair sex. If he could scrape acquaintance with the maids of the establishment, it would not be long before he knew all they had to tell.
Accordingly next morning he sent for Sergeant Nolan and explained his idea, and Nolan, who, where his superiors were concerned, was a man of few words, said, “Yes, sir,” and withdrew.
The following day he returned with his first report. It seemed that, changing into the garb of a better-class mechanic and taking a small kit of tools with him, he had called at Mr. Duke’s in the character of an electrician who had been sent to overhaul the light fittings.
Miss Duke happened to be out, and the rather pretty housemaid who opened the door, charmed with the newcomer’s manner, admitted him without hesitation. He had gone all over the house, paying particular attention to Mr. Duke’s bedroom. In the middle of the day he had asked and been granted leave to heat his can of soup at the kitchen fire, and to such purpose had he used the opportunities thus gained that before he left he had prevailed on the pretty housemaid to go with him to supper and the pictures on her next evening out. “Once I get a drop of spirits into her I’ll get all she knows,” he concluded, “though I doubt if it’ll be much.”
“That’s all right so far as it goes,” French admitted, “but what have you actually found out?”
“Well, there’s first of all the family. It’s a small one; there’s only the father and the daughter, Miss Sylvia. The mother’s alive, but she has been in a lunatic asylum for years, quite incurable, they said. Miss Sylvia is a nice-looking young lady and well liked, by what Rachael says—that’s the housemaid. Then there’s the servants; this Rachael, and another girl, Annie, and Sarah, the cook, and there’s a shover they call Manley. I didn’t see him, but the girls seem all right—not the kind that would be after the keys of jewel safes anyway.”
“What’s the house like?”