"n.o.body but the corpse," responded Milly, with a slight shiver. "Miss Heredith's had her bedroom shifted. Last night she slept downstairs, but this morning she gave orders for the white bedroom in the right wing to be prepared for her. I reckon she wants to get as far away from it as possible, and I don't blame her."

Caldew proceeded upstairs, and entered the death-chamber in the silent wing. On his way back from Chidelham he had picked up a round stone, which he now took from his pocket, intending to throw it from the window, and mark the spot where it fell into the moat. He opened the window, and looked out across the garden. The distance to the moat was much farther than he had imagined; so great, indeed, that his own shot at the water fell short by several feet. It was impossible that Miss Heredith could have accomplished such a remarkable feat as to hurl a revolver across the intervening s.p.a.ce between the window and the moat. No woman could throw so far and so straight.

This unforeseen obstacle rather disconcerted Caldew at first, but on looking out of the window again it seemed to him, by the lay of the house, that the window of Miss Heredith's bedroom was closer to the moat than the window at which he was standing. As Miss Heredith had transferred her bedroom to the other wing, he decided to go into the room and see if he were right. He still clung to his new idea that the revolver had been thrown into the moat, although his altered view that it might have been thrown from Miss Heredith's window meant the abandonment of his other a.s.sumption that the disposal of the revolver by that means accounted for the open window in Mrs. Heredith's bedroom. Caldew realized as he left the room that the question of the open window still remained to be solved. What he did not realize was that he was distorting the facts of the case in order to establish the possibility of his own theory.

The door of the room which Miss Heredith had occupied was ajar. He pushed it open and entered. There was within that deserted and desolate air which a room so quickly takes on when the occupant has vacated it. The heavier furniture and the bed remained to demonstrate the ugliness of utility after the accessories and adjuncts of luxury had been carried away.

The blind was down and the room in partial darkness. Caldew went to the window, raised the blind, and looked out. The distance to the moat was appreciably nearer, compared with the window of the room he had just left, but the distance was still considerable.

As Caldew turned from the window, with the reluctant conviction that he had been nursing an untenable theory, a last ray of sunshine shot through the open window, causing the dust he had raised by his entrance to quiver and gyrate like a host of mad bacilli dancing a jig. The shaft of light, falling athwart the dismantled toilet-table, brought something else into view-a tiny fragment of gold chain dangling from the polished satinwood drawer.

Caldew pulled the drawer open. Inside was a lady's thin gold neck chain, with a bundle of charms and trinkets attached to the end, which had evidently been left behind and forgotten. He glanced at the chain carelessly, and was about to replace it in the drawer, when his eye was arrested by one of the trinkets. It was a small image, not much over an inch in length; a squatting heathen G.o.d, with crossed arms and a satyr's face-a wonderful example of savage carving in miniature.

It was not the perfection of the carving or the unusual nature of the ornament which attracted Caldew's attention, but the material, of which it was composed, a clear almost transparent stone, with the faintest possible tinge of green. Holding it in the sunlight, Caldew was able to detect one or two minute black flecks in the stone. There was no doubt about it-the image was of the same peculiar material as the trinket he had seen in the murdered woman's room the previous night.

As he stood there examining the charm, the murmur of voices not far away fell on his ears. Looking cautiously out of the window, he saw Musard and Miss Heredith walk round the side of the house to the garden, deep in earnest conversation. Caldew backed away to an angle where he was not visible from beneath, and watched them closely. Musard was talking, occasionally using an impressive gesture, and Miss Heredith was listening attentively, with a downcast face, and eyes which suggested recent tears. As she pa.s.sed underneath the window at which he was watching, she raised a handkerchief to her face and sobbed aloud. Caldew wondered to see the proud and reserved mistress of the moat-house show her grief so freely in the presence of Musard, until he remembered what his sister had told him of their supposed early love for each other. And with that thought came another. It must have been Musard, the explorer, the man who had wandered afar in strange lands in search of precious stones, who had brought to the moat-house the peculiar stone of which the missing brooch and the little image had been fashioned.

Acting on the swift impulse to take the image to Miss Heredith and see how she received it, Caldew slipped the chain into his pocket and hurried downstairs. At the bottom of the staircase he was stopped by Tufnell, who had evidently been waiting for him to descend. The usually imperturbable dignity of the butler was for once ruffled, and he looked slightly flushed and dishevelled.

"I have been down to the village looking for you," he said, in a querulous tone. The majesty of the law had not vested Caldew with any dignity in the old butler's eyes. He saw in him only the village urchin of a score of years ago, whose mischievous pranks on the Heredith estate had been a constant source of worry to him.

The detective appreciated the estimation in which the old man held him, and the fact did not tend to lessen his own irritation.

"What did you want me for?" he curtly asked.

"I did not want you, but the gentlemen in the library do. Superintendent Merrington thought you had been a long time away, and he sent me down to the village to look for you. He is anxious to return to London. You will find him in the library."

The butler's cool a.s.sumption that it was Merrington's privilege to command, and Caldew's duty to obey, nettled the latter considerably. He felt that Merrington had, in his offensive way, deliberately a.s.serted his official authority in order to humiliate him in his native place. Acting on the impulse of anger he replied:

"I have some things to attend to before I can see him. You can tell him so, if you like."

He walked away towards the hall door, conscious that the butler was standing stationary by the stairs, watching him. When he got outside, he turned his steps towards the garden; but brief as had been the interval since he had seen Musard and Miss Heredith conversing together by the sundial, it had been sufficient to bring the conversation to a conclusion. Miss Heredith was no longer to be seen, and Musard was sauntering along the gravel walk smoking a cigar.

Had they seen him at the window, and broken off their conference in consequence? It looked as if this were so. Miss Heredith must have entered the house by another door, because if she had gone in by the front door he must have encountered her. Caldew would have retraced his steps if Musard had not looked up, and, seeing the detective, waited for him to approach.

Caldew walked towards him, wondering whether Miss Heredith had missed her chain of charms, and had gone upstairs to find it. In that case, he reflected grimly, the position of the previous night was reversed, and this time it was she who was forestalled. It was an ironical situation, truly, but he was to some extent the master of it.

Musard nodded to the detective and proffered his cigarcase. Caldew accepted a cigar and admired the case, which was made of crocodile skin, worked and dressed in a manner altogether new to him. He had never seen anything like it in London tobacconists' shops, and he said so.

"Native manufacture," replied Musard, selecting a fresh cigar. "My Chinese boy shot the crocodile which provided it. It's a rare thing for a Chinese to be a good shot with a modern English rifle, but my boy would carry off anything at Bisley. He never misses. It was lucky for me that he didn't that time, because the brute came along to bag me while I was swimming in a river. Suey, hearing me call, ran out from the tent with my rifle, and shot him from the bank. He got him through the eye-the eye and the throat are the only two vulnerable spots in a crocodile. A bullet will rebound off the head as off a rock."

"Where did this happen?" asked Caldew, in an interested tone. His own knowledge of crocodiles was confined to the fact that he had once seen a small one in a tank at the Zoological Gardens.

"In Zambesi. There are plenty of them there in the rivers and mango swamps. Some hunters stake a dog overnight by the river bank, and the animal gives them warning of the approach of the reptiles by howling with terror. It is rather cruel-to the dog."

"Undoubtedly," said Caldew.

"How are you getting on with your investigations in this case?" continued Musard, abruptly changing the conversation.

Caldew was instantly wary, and stiffened into an att.i.tude of official reserve, wondering why Musard should seek to question him about the murder.

"I am an old friend of the Herediths," continued Musard, as though divining the other's thoughts. "This murder is a very terrible thing for them. I am afraid it may mean Sir Philip's death-blow. He is old and feeble, and the shock, and his son's illness, have had a very bad effect on him. I should have gone to France to-day for the War Office, but I arranged for somebody to go in my place in order to remain with the family in their hour of trial. Have you found out anything which leads you to suppose you are on the track of the murdered?"

"I am afraid I cannot tell you anything about the investigations," replied the detective cautiously. "I am not in charge of the case, you know."

"I understand," rejoined the other, with a nod. "Perhaps I should not have asked you. My anxiety must be my excuse."

He uttered this apology so courteously and pleasantly that Caldew felt momentarily ashamed of his own rigidly official att.i.tude. But his instincts of caution quickly rea.s.serted themselves, and he told himself that in this sinister case it was his business to be on his guard and talk to n.o.body.

The situation was terminated by the reappearance of Miss Heredith from a door at the side of the house. The detective was a little surprised to see her again, for he had conceived the idea that she had gone indoors to avoid meeting him. She went eagerly to Musard without noticing him.

"Oh, Vincent!" she exclaimed, and the look of relief on her face was unmistakable. "Sir Ralph Horton is just leaving. He says that Phil has pa.s.sed the crisis, and there is no need for him to stay any longer. Phil still needs great care and attention, but Sir Ralph says it will be quite safe to leave him in Dr. Holmes's hands. There is no fear for his brain, thank G.o.d."

"This is good news," said Musard. "Have you told Sir Philip?"

"Not yet. I thought it better to defer it until after dinner. I want you to tell him then."

Miss Heredith turned as though to re-enter the house, but Caldew, who had been hovering a few paces away within earshot of this dialogue, approached her with the gold chain in his hand.

"Excuse me, Miss Heredith," he said. "One of the maids told me that you no longer occupied the room upstairs in the left wing, so I took the liberty of going in there to see if it was possible for the murderer to have escaped by clambering from the window of one room to another, and while I was there I found this chain. It was hanging out of a drawer of the toilet-table near the window, and as it had obviously been forgotten I thought I had better restore it to you."

He held it out to her as he finished speaking, keenly watching her face for some sign of confusion or trepidation. But Miss Heredith received the chain calmly, and thanked him for returning it. Caldew was disappointed at the failure of his test, but he essayed a further shot.

"I noticed a very peculiar little image among the charms on the chain," he said hesitatingly. "I have never seen anything like it before, and I couldn't help wondering where it came from."

It was a clumsy trap, and he realized it, but he was too anxious to achieve his end by more subtle methods. There was nothing in Miss Heredith's calm countenance to suggest that she was alarmed or uneasy at his curiosity. She turned to Musard.

"Mr. Caldew means the strange little image you gave me when you arrived, Vincent. What is it?"

She held out the chain, and the explorer took it in his big brown hand. He separated the image from the other charms with his forefinger, and turned it over carelessly.

"That is a tiki," he said.

The explanation conveyed nothing to Caldew.

"I have never heard the word before," he said. "What is a tiki?"

"It is the Maori word for the creator of man, and is also taken to represent an ancestor," Musard explained. "The Maoris are to some extent ancestor worshippers, and adorn their pahs and temples with large wooden images of immense size, supposed to represent some renowned fighting ancestor. These images are worshipped as G.o.ds, and are believed to be visited by the spirits, who ascend to converse with them by the hollow roots of a pohutukawa tree, which descends into the Maori nether regions. The smaller tikis, or, more strictly speaking, hei-tiki, such as this, are carved as representations in miniature of the larger images, and are worn as neck ornaments. They are supposed to render the wearer immune from the wicked designs of evil spirits."

"From what material are they carved?" said Caldew, who had followed this explanation attentively. "I have never seen anything resembling it. It seems as clear and colourless as gla.s.s, but it emits a faint greenish l.u.s.tre, and there are black flecks in it."

"It is nephrite, or Maori greenstone," replied Musard. "London jewellers term it New Zealand jade."

"Surely this stone is not jade?" said Caldew, in some surprise. "I have seen New Zealand jade ornaments in London shops, but they were made from a dull deep greenstone, not a bit like this stone, which is clear as crystal, and has a l.u.s.tre."

"There are different sorts of jade," replied Musard. "The present craze of Society women is for Chinese pink jade and tourmalin. A good pink jade necklace will readily bring a thousand pounds in Bond Street, and it is going to be the fashionable jewel of the season. New Zealand nephrite has not yet come into popular favour with English ladies, and only the commoner dark green variety, which is frequently spurious, is seen here. This image was made of the rarer kind of pounamu, as the Maoris call it."

"It is very pretty," said Caldew. "Have you any more of it?" He flattered himself that the a.s.sumption of carelessness in his tone was not overdone.