Inspiration came to him. Aline Peters had a maid! What more likely than that secretly she should be a hireling of Mr. Peters, on whom he had now come to look as a man of the blackest and most sinister character? Mr. Peters was a collector; and when a collector makes up his mind to secure a treasure, he employs, Baxter knew, every possible means to that end.
Baxter was now in a state of great excitement. He was hot on the scent and his brain was working like a buzz saw in an ice box. According to his reasoning, if Aline Peters' maid had done this thing there should be red paint in the hall marking her retreat, and possibly a faint stain on the stairs leading to the servants' bedrooms.
He hastened from the museum and subjected the hall to a keen scrutiny. Yes; there was red paint on the carpet. He passed through the green-baize door and examined the stairs. On the bottom step there was a faint but conclusive stain of crimson!
He was wondering how best to follow up this clew when he perceived Ashe coming down the stairs. Ashe, like Baxter, and as the result of a night disturbed by anxious thoughts, had also overslept himself.
There are moments when the giddy excitement of being right on the trail causes the amateur—or Watsonian—detective to be incautious. If Baxter had been wise he would have achieved his object—the getting a glimpse of Joan's shoes—by a devious and snaky route. As it was, zeal getting the better of prudence, he rushed straight on. His early suspicion of Ashe had been temporarily obscured. Whatever Ashe's claims to be a suspect, it had not been his footprint Baxter had seen in the museum.
"Here, you!" said the Efficient Baxter excitedly.
"Sir?"
"The shoes!"
"I beg your pardon?"
"I wish to see the servants' shoes. Where are they?"
"I expect they have them on, sir."
"Yesterday's shoes, man—yesterday's shoes. Where are they?"
"Where are the shoes of yesteryear?" murmured Ashe. "I should say at a venture, sir, that they would be in a large basket somewhere near the kitchen. Our genial knife-and-shoe boy collects them, I believe, at early dawn."
"Would they have been cleaned yet?"
"If I know the lad, sir—no."
"Go and bring that basket to me. Bring it to me in this room."
The room to which he referred was none other than the private sanctum of Mr. Beach, the butler, the door of which, standing open, showed it to be empty. It was not Baxter's plan, excited as he was, to risk being discovered sifting shoes in the middle of a passage in the servants' quarters.
Ashe's brain was working rapidly as he made for the shoe cupboard, that little den of darkness and smells, where Billy, the knife-and-shoe boy, better known in the circle in which he moved as Young Bonehead, pursued his menial tasks. What exactly was at the back of the Efficient Baxter's mind prompting these maneuvers he did not know; but that there was something he was certain.
He had not yet seen Joan this morning, and he did not know whether or not she had carried out her resolve of attempting to steal the scarab on the previous night; but this activity and mystery on the part of their enemy must have some sinister significance. He gathered up the shoe basket thoughtfully. He staggered back with it and dumped it down on the floor of Mr. Beach's room. The Efficient Baxter stooped eagerly over it. Ashe, leaning against the wall, straightened the creases in his clothes and flicked disgustedly at an inky spot which the journey had transferred from the basket to his coat.
"We have here, sir," he said, "a fair selection of our various foot coverings."
"You did not drop any on your way?"
"Not one, sir."
The Efficient Baxter uttered a grunt of satisfaction and bent once more to his task. Shoes flew about the room. Baxter knelt on the floor beside the basket, and dug like a terrier at a rat hole. At last he made a find and with an exclamation of triumph rose to his feet. In his hand he held a shoe.
"Put those back," he said.
Ashe began to pick up the scattered footgear.
"That's the lot, sir," he said, rising.
"Now come with me. Leave the basket there. You can carry it back when you return."
"Shall I put back that shoe, sir?"
"Certainly not. I shall take this one with me."
"Shall I carry it for you, sir?"
Baxter reflected.
"Yes. I think that would be best."
Trouble had shaken his nerve. He was not certain that there might not be others besides Lord Emsworth in the garden; and it occurred to him that, especially after his reputation for eccentric conduct had been so firmly established by his misfortunes that night in the hall, it might cause comment should he appear before them carrying a shoe.
Ashe took the shoe and, doing so, understood what before had puzzled him. Across the toe was a broad splash of red paint. Though he had nothing else to go on, he saw all. The shoe he held was a female shoe. His own researches in the museum had made him aware of the presence there of red paint. It was not difficult to build up on these data a pretty accurate estimate of the position of affairs.
"Come with me," said Baxter.
He left the room. Ashe followed him.
In the garden Lord Emsworth, garden fork in hand, was dealing summarily with a green young weed that had incautiously shown its head in the middle of a flower bed. He listened to Baxter's statement with more interest than he usually showed in anybody's statements. He resented the loss of the scarab, not so much on account of its intrinsic worth as because it had been the gift of his friend Mr. Peters.
"Indeed!" he said, when Baxter had finished. "Really? Dear me! It certainly seems—It is extremely suggestive. You are certain there was red paint on this shoe?"
"I have it with me. I brought it on purpose to show you." He looked at Ashe, who stood in close attendance. "The shoe!"
Lord Emsworth polished his glasses and bent over the exhibit.
"Ah!" he said. "Now let me look at—This, you say, is the—Just so; just so! Just—My dear Baxter, it may be that I have not examined this shoe with sufficient care, but—Can you point out to me exactly where this paint is that you speak of?"
The Efficient Baxter stood staring at the shoe with wild, fixed stare. Of any suspicion of paint, red or otherwise, it was absolutely and entirely innocent!
The shoe became the center of attraction, the center of all eyes. The Efficient Baxter fixed it with the piercing glare of one who feels that his brain is tottering. Lord Emsworth looked at it with a mildly puzzled expression. Ashe Marson examined it with a sort of affectionate interest, as though he were waiting for it to do a trick of some kind. Baxter was the first to break the silence.
"There was paint on this shoe," he said vehemently. "I tell you there was a splash of red paint across the toe. This man here will bear me out in this. You saw paint on this shoe?"
"Paint, sir?"
"What! Do you mean to tell me you did not see it?"
"No, sir; there was no paint on this shoe."
"This is ridiculous. I saw it with my own eyes. It was a broad splash right across the toe."
Lord Emsworth interposed.
"You must have made a mistake, my dear Baxter. There is certainly no trace of paint on this shoe. These momentary optical delusions are, I fancy, not uncommon. Any doctor will tell you—"
"I had an aunt, your lordship," said Ashe chattily, "who was remarkably subject—"
"It is absurd! I cannot have been mistaken," said Baxter. "I am positively certain the toe of this shoe was red when I found it."