"It's locked, I suppose, Mr. Clement?"

"Yes. I'm just going to take it down to the police station."

"You don't think it would be better to telephone?"

Of course unquestionably it would be better to telephone. To stride through the village, suit-case in hand, would be to court a probably undesirable publicity.

So I unlatched Miss Marple's garden gate and entered the house by the French window, and from the sanctity of the drawing-room with the door shut, I telephoned my news.

The result was that Inspector Slack announced he would be up himself in a couple of jiffies.

When he arrived it was in his most cantankerous mood.

"So we've got it, have we?" he said. "You know, sir, you shouldn't keep things to yourself. If you've any reason to believe you know where the article in question was hidden, you ought to have reported it to the proper authorities."

"It was a pure accident," I said. "The idea just happened to occur to me."

"And that's a likely tale. Nearly three-quarters of a mile of woodland, and you go right to the proper spot and lay your hand upon it."

I would have given Inspector Slack the steps in reasoning which led me to this particular spot, but he had achieved his usual result of putting my back up. I said nothing.

"Well?" said Inspector Slack, eyeing the suit-case with dislike and wouldbe indifference, "I suppose we might as well have a look at what's inside."

He had brought an assortment of keys and wire with him. The lock was a cheap affair. In a couple of seconds the case was open.

I don't know what we had expected to find - something sternly sensational, I imagine. But the first thing that met our eyes was a greasy plaid scarf. The inspector lifted it out. Next came a faded dark blue overcoat, very much the worse for wear. A checked cap followed.

"A shoddy lot." said the inspector.

A pair of boots very down at heel and battered came next. At the bottom of the suit-case was a parcel done up in newspaper.

"Fancy shirt, I suppose," said the inspector bitterly, as he tore it open.

A moment later he had caught his breath in surprise.

For inside the parcel were some demure little silver objects and a round platter of the same metal.

Miss Marple gave a shrill exclamation of recognition.

"The trencher salts," she exclaimed. "Colonel Protheroe's trencher salts, and the Charles II tazza. Did you ever hear of such a thing!"

The inspector had got very red.

"So that was the game," he muttered. "Robbery. But I can't make it out. There's been no mention of these things being missing."

"Perhaps they haven't discovered the loss," I suggested. "I presume these valuable things would not have been kept out in common use. Colonel Protheroe probably kept them locked away in a safe."

"I must investigate this," said the inspector. "I'll go right up to Old Hall now. So that's why our Dr. Stone made himself scarce. What with the murder and one thing and another, he was afraid we'd get wind of his activities. As likely as not his belongings might have been searched. He got the girl to hide them in the wood with a suitable change of clothing. He meant to come back by a roundabout route and go off with them one night whilst she stayed here to disarm suspicion. Well, there's one thing to the good. This lets him out over the murder. He'd nothing to do with that. Quite a different game."

He repacked the suit-case and took his departure, refusing Miss Marple's offer of a glass of sherry.

"Well, that's one mystery cleared up," I said with a sigh, "What Slack says is quite true; there are no grounds for suspecting him of the murder. Everything's accounted for quite satisfactorily."

"It really would seem so," said Miss Marple. "Although one never can be quite certain, can one?"

"There's a complete lack of motive," I pointed out. "He'd got what he came for and was clearing out."

"Y-es."

She was clearly not quite satisfied, and I looked at her in some curiosity. She hastened to answer my inquiring gaze with a kind of apologetic eagerness.

"I've no doubt I am quite wrong. I'm so stupid about these things. But I just wondered - I mean this silver is very valuable, is it not?"

"A tazza sold the other day for over a thousand pounds, I believe."

"I mean - it's not the value of the metal."

"No, it's what one might can a connoisseur's value."

"That's what I mean. The sale of such things would take a little time to arrange, or even if it was arranged, it couldn't be carried through without secrecy. I mean - if the robbery were reported and a hue and cry were raised, well, the things couldn't be marketed at all."

"I don't quite see what you mean?" I said.

"I know I'm putting it badly." She became more flustered and apologetic. "But it seems to me that - that the things couldn't just have been abstracted, so to speak. The only satisfactory thing to do would be to replace these things with copies. Then, perhaps, the robbery wouldn't be discovered for some time."

"That's a very ingenious idea," I said.

"It would be the only way to do it, wouldn't it? And if so, of course, as you say, once the substitution had been accomplished there wouldn't have been any reason for murdering Colonel Protheroe - quite the reverse."

"Exactly," I said. "That's what I said."

"Yes, but I just wondered - I don't know, of course - and Colonel Protheroe always talked a lot about doing things before he actually did do them, and, of course, sometimes never did them all, but he did say -"

"Yes?"

"That he was going to have all his things valued - a man down from London. For probate - no, that's when you're dead - for insurance. Someone told him that was the thing to do. He talked about it a great deal, and the importance of having it done. Of course, I don't know if he had made any actual arrangements, but if he had…"

"I see," I said slowly.

"Of course, the moment the expert saw the silver, he'd know and then Colonel Protheroe would remember having shown the things to Dr. Stone - I wonder if it was done then - legerdemain don't they call it? So clever - and then, well, the fat would be in the fire, to use an old-fashioned expression."

"I see your idea," I said. "I think we ought to find out for certain."

I went once more to the telephone. In a few minutes I was through to Old Hall and speaking to Anne Protheroe.

"No, it's nothing very important. Has the inspector arrived yet? Oh! well, he's on his way. Mrs. Protheroe, can you tell me if the contents of Old Hall were ever valued? What's that you say?"

Her answer came clear and prompt. I thanked her, replaced the receiver, and turned to Miss Marple.

"That's very definite. Colonel Protheroe had made arrangements for a man to come down from London on Monday - to-morrow - to make a full valuation. Owing to the colonel's death the matter has been put off."

"Then there was a motive," said Miss Marple softly.

"A motive, yes. But that's all. You forget. When the shot was fired, Dr. Stone had just joined the others, or was climbing over the stile in order to do so."

"Yes," said Miss Marple thoughtfully, "So that rules him out."