"I only hope Boyle is sticking to scientific researches," said Horne Fisher. "I'm not very comfortable about him myself. But let's talk about something else."

They talked about something else longer than they probably imagined, until the tropical night had come and a splendid moon painted the whole scene with silver; but before it was bright enough to see by Fisher had already noted that the lights in the library had been abruptly extinguished. He waited for the two men to come out by the garden entrance, but n.o.body came.

"They must have gone for a stroll on the links," he said.

"Very possibly," replied Grayne. "It's going to be a beautiful night."

A moment or two after he had spoken they heard a voice hailing them out of the shadow of the clubhouse, and were astonished to perceive Travers hurrying toward them, calling out as he came:

"I shall want your help, you fellows," he cried. "There's something pretty bad out on the links."

They found themselves plunging through the club smoking room and the library beyond, in complete darkness, mental as well as material.

But Horne Fisher, in spite of his affectation of indifference, was a person of a curious and almost transcendental sensibility to atmospheres, and he already felt the presence of something more than an accident. He collided with a piece of furniture in the library, and almost shuddered with the shock, for the thing moved as he could never have fancied a piece of furniture moving. It seemed to move like a living thing, yielding and yet striking back. The next moment Grayne had turned on the lights, and he saw he had only stumbled against one of the revolving bookstands that had swung round and struck him; but his involuntary recoil had revealed to him his own subconscious sense of something mysterious and monstrous. There were several of these revolving bookcases standing here and there about the library; on one of them stood the two cups of coffee, and on another a large open book. It was Budge's book on Egyptian hieroglyphics, with colored plates of strange birds and G.o.ds, and even as he rushed past, he was conscious of something odd about the fact that this, and not any work of military science, should be open in that place at that moment. He was even conscious of the gap in the well-lined bookshelf from which it had been taken, and it seemed almost to gape at him in an ugly fashion, like a gap in the teeth of some sinister face.

A run brought them in a few minutes to the other side of the ground in front of the bottomless well, and a few yards from it, in a moonlight almost as broad as daylight, they saw what they had come to see.

The great Lord Hastings lay p.r.o.ne on his face, in a posture in which there was a touch of something strange and stiff, with one elbow erect above his body, the arm being doubled, and his big, bony hand clutching the rank and ragged gra.s.s. A few feet away was Boyle, almost as motionless, but supported on his hands and knees, and staring at the body. It might have been no more than shock and accident; but there was something ungainly and unnatural about the quadrupedal posture and the gaping face. It was as if his reason had fled from him. Behind, there was nothing but the clear blue southern sky, and the beginning of the desert, except for the two great broken stones in front of the well. And it was in such a light and atmosphere that men could fancy they traced in them enormous and evil faces, looking down.

Horne Fisher stooped and touched the strong hand that was still clutching the gra.s.s, and it was as cold as a stone. He knelt by the body and was busy for a moment applying other tests; then he rose again, and said, with a sort of confident despair:

"Lord Hastings is dead."

There was a stony silence, and then Travers remarked, gruffly: "This is your department, Grayne; I will leave you to question Captain Boyle. I can make no sense of what he says."

Boyle had pulled himself together and risen to his feet, but his face still wore an awful expression, making it like a new mask or the face of another man.

"I was looking at the well," he said, "and when I turned he had fallen down."

Grayne's face was very dark. "As you say, this is my affair," he said. "I must first ask you to help me carry him to the library and let me examine things thoroughly."

When they had deposited the body in the library, Grayne turned to Fisher and said, in a voice that had recovered its fullness and confidence, "I am going to lock myself in and make a thorough examination first. I look to you to keep in touch with the others and make a preliminary examination of Boyle. I will talk to him later. And just telephone to headquarters for a policeman, and let him come here at once and stand by till I want him."

Without more words the great criminal investigator went into the lighted library, shutting the door behind him, and Fisher, without replying, turned and began to talk quietly to Travers. "It is curious," he said, "that the thing should happen just in front of that place."

"It would certainly be very curious," replied Travers, "if the place played any part in it."

"I think," replied Fisher, "that the part it didn't play is more curious still."

And with these apparently meaningless words he turned to the shaken Boyle and, taking his arm, began to walk him up and down in the moonlight, talking in low tones.

Dawn had begun to break abrupt and white when Cuthbert Grayne turned out the lights in the library and came out on to the links. Fisher was lounging about alone, in his listless fashion; but the police messenger for whom he had sent was standing at attention in the background.

"I sent Boyle off with Travers," observed Fisher, carelessly; "he'll look after him, and he'd better have some sleep, anyhow."

"Did you get anything out of him?" asked Grayne. "Did he tell you what he and Hastings were doing?"

"Yes," answered Fisher, "he gave me a pretty clear account, after all. He said that after Lady Hastings went off in the car the general asked him to take coffee with him in the library and look up a point about local antiquities. He himself was beginning to look for Budge's book in one of the revolving bookstands when the general found it in one of the bookshelves on the wall. After looking at some of the plates they went out, it would seem, rather abruptly, on to the links, and walked toward the old well; and while Boyle was looking into it he heard a thud behind him, and turned round to find the general lying as we found him. He himself dropped on his knees to examine the body, and then was paralyzed with a sort of terror and could not come nearer to it or touch it. But I think very little of that; people caught in a real shock of surprise are sometimes found in the queerest postures."

Grayne wore a grim smile of attention, and said, after a short silence:

"Well, he hasn't told you many lies. It's really a creditably clear and consistent account of what happened, with everything of importance left out."

"Have you discovered anything in there?" asked Fisher.

"I have discovered everything," answered Grayne.

Fisher maintained a somewhat gloomy silence, as the other resumed his explanation in quiet and a.s.sured tones.

"You were quite right, Fisher, when you said that young fellow was in danger of going down dark ways toward the pit. Whether or no, as you fancied, the jolt you gave to his view of the general had anything to do with it, he has not been treating the general well for some time. It's an unpleasant business, and I don't want to dwell on it; but it's pretty plain that his wife was not treating him well, either. I don't know how far it went, but it went as far as concealment, anyhow; for when Lady Hastings spoke to Boyle it was to tell him she had hidden a note in the Budge book in the library.

The general overheard, or came somehow to know, and he went straight to the book and found it. He confronted Boyle with it, and they had a scene, of course. And Boyle was confronted with something else; he was confronted with an awful alternative, in which the life of one old man meant ruin and his death meant triumph and even happiness."

"Well," observed Fisher, at last, "I don't blame him for not telling you the woman's part of the story. But how do you know about the letter?"

"I found it on the general's body," answered Grayne, "but I found worse things than that. The body had stiffened in the way rather peculiar to poisons of a certain Asiatic sort. Then I examined the coffee cups, and I knew enough chemistry to find poison in the dregs of one of them. Now, the General went straight to the bookcase, leaving his cup of coffee on the bookstand in the middle of the room. While his back was turned, and Boyle was pretending to examine the bookstand, he was left alone with the coffee cup. The poison takes about ten minutes to act, and ten minutes' walk would bring them to the bottomless well."

"Yes," remarked Fisher, "and what about the bottomless well?"

"What has the bottomless well got to do with it?" asked his friend.

"It has nothing to do with it," replied Fisher. "That is what I find utterly confounding and incredible."

"And why should that particular hole in the ground have anything to do with it?"

"It is a particular hole in your case," said Fisher. "But I won't insist on that just now. By the way, there is another thing I ought to tell you. I said I sent Boyle away in charge of Travers. It would be just as true to say I sent Travers in charge of Boyle."

"You don't mean to say you suspect Tom Travers?" cried the other.

"He was a deal bitterer against the general than Boyle ever was,"

observed Horne Fisher, with a curious indifference.

"Man, you're not saying what you mean," cried Grayne. "I tell you I found the poison in one of the coffee cups."

"There was always Said, of course," added Fisher, "either for hatred or hire. We agreed he was capable of almost anything."

"And we agreed he was incapable of hurting his master," retorted Grayne.

"Well, well," said Fisher, amiably, "I dare say you are right; but I should just like to have a look at the library and the coffee cups."

He pa.s.sed inside, while Grayne turned to the policeman in attendance and handed him a scribbled note, to be telegraphed from headquarters. The man saluted and hurried off; and Grayne, following his friend into the library, found him beside the bookstand in the middle of the room, on which were the empty cups.

"This is where Boyle looked for Budge, or pretended to look for him, according to your account," he said.

As Fisher spoke he bent down in a half-crouching att.i.tude, to look at the volumes in the low, revolving shelf, for the whole bookstand was not much higher than an ordinary table. The next moment he sprang up as if he had been stung.

"Oh, my G.o.d!" he cried.

Very few people, if any, had ever seen Mr. Horne Fisher behave as he behaved just then. He flashed a glance at the door, saw that the open window was nearer, went out of it with a flying leap, as if over a hurdle, and went racing across the turf, in the track of the disappearing policeman. Grayne, who stood staring after him, soon saw his tall, loose figure, returning, restored to all its normal limpness and air of leisure. He was fanning himself slowly with a piece of paper, the telegram he had so violently intercepted.

"Lucky I stopped that," he observed. "We must keep this affair as quiet as death. Hastings must die of apoplexy or heart disease."