The next few hours were educative for Captain Stanhill. Although he was Chief Constable of Suss.e.x, he took no part in the proceedings, but sat at the table like a man in a dream, living in a world of Superintendent Merrington's creation-a world of sinister imaginings and vile motives, through which stealthy suspicion prowled craftily with padded feet, seeking a victim among the procession of weeping maids, stolid under-gardeners, stable hands, and anxious upper servants who presented themselves in the library to be questioned. But it seemed to Captain Stanhill that though the women were fl.u.s.tered and the men nervous, they knew nothing whatever about the atrocious murder which had been committed a few hours before in the room above their heads. Merrington also seemed to be aware that he was getting no nearer the truth with his traps, his questions, and his bullying, and he grew so angry and savage as the day wore on that he reminded Captain Stanhill of a bull he had once seen trying to rend a way through a mesh. As the morning advanced, Merrington's face took on a deeper tint of purple, his fierce little eyes grew more bloodshot, and between the intervals of examining the servants he mopped his perspiring head with a large handkerchief.

The significance of one fact he did not realize until afterwards. The last of the inmates of the moat-house to come to the library was the housekeeper, Mrs. Rath, who presented herself at his request in order to acquaint him with the details of the domestic management of the household. Mrs. Rath entered the room with a nervous air. Her white face contrasted oddly with her black dress, and her hands shook slightly, in spite of her effort to appear composed. Merrington stared at her careworn face and hollow grey eyes with the perplexed sensation of a man who is confronted with a face familiar to him, but is unable to recall its ident.i.ty.

"Where have I seen you before?" he blurted out.

The housekeeper raised frightened eyes, ringed with black, to his truculent face, but dropped them again without speaking. Merrington did not repeat his question. He did not imagine the housekeeper knew anything about the murder, but it was a mistake to put a witness on her guard. It was in quite a different tone that he thanked Mrs. Rath for sending the servants to the library, and asked her to describe the household arrangements of the previous night. Mrs. Rath, who had been palpably nervous after his first question, became rea.s.sured and more at her ease, and answered him intelligently.

"And where were you at the time of the murder, Mrs. Rath?" pursued Merrington, when he had drawn forth these details.

"I was in my sitting-room."

"Did you hear the scream and the shot?"

"I heard the scream, but not the shot."

"How was that?"

"My sitting-room is a long way from Mrs. Heredith's room. Perhaps that is the reason."

Merrington looked at the position of the housekeeper's room on the plan of the moat-house which Caldew had drawn. As she said, it was a considerable distance to her room, which was in the old portion of the house, near the rear, and on the ground floor.

"Were you alone in your room?" he asked.

"No. My daughter was sitting with me."

To a quick ear it may have seemed that the answer was a trifle long in coming.

Merrington shook his head irritably. Really, it seemed impossible to reach the end of the people who were in this infernal moat-house at the time of the murder.

"Does your daughter live with you here?" he asked.

"Oh, no. She came to see me yesterday afternoon, and stayed all night because she missed her train back after-after the tragedy."

"Is she here now?"

"No. She went away by an early train. She is employed as a milliner at Stading, the market town, which is ten miles away."

"She lives there, I suppose?"

"Yes. She lives in."

"Who is her employer?"

"Mr. Closeby, the draper. Daniel Closeby and Son is the name of the firm."

Merrington made another note in his pocket-book. It sounded plausible enough, but the girl must be added to the lengthening list of people in the case who would have to be seen.

"I think that is all I need detain you for, Mrs. Rath," he said.

The housekeeper lingered to inquire when the gentlemen would like their lunch. Merrington, who had breakfasted early and pa.s.sed an arduous morning, replied bluntly that it could not be too soon to please him.

"I'll have it served in the small breakfast-room in a quarter of an hour," said Mrs. Rath, hurrying away.

Her whole bearing, as she departed, indicated such an air of irrepressible relief at having pa.s.sed through a trying ordeal that all Merrington's former doubts of her revived.

"I'd give something to remember where I've seen that infernal woman before," he e.j.a.c.u.l.a.t.ed, slapping his thigh emphatically.

"What infernal woman?" asked Captain Stanhill, who had come to the conclusion that he did not like Superintendent Merrington or his style of conversation.

"Why, that woman who has just left the room-that housekeeper. I've seen her before somewhere, in very different circ.u.mstances, but I cannot recall where. I recollect her face distinctly-particularly her eyes. I flatter myself I never forget a pair of eyes. Confound it, where the devil have I seen her?"

Captain Stanhill turned away indifferently, and the conversation was terminated by the appearance of Detective Caldew, who appeared in the doorway as Mrs. Rath left the room.

"Dr. Holmes is waiting in the drawing-room if you wish to see him," he announced.

"Bring him here," commanded Merrington curtly. He had a great notion of his self-importance, and had no intention of dancing attendance on a mere country pract.i.tioner.

Caldew went away, and shortly reappeared with a little man whom he introduced as Dr. Holmes. The doctor was a meagre shrimp of humanity, with a peevish expression on his withered little face, as though he were bored with his own nonent.i.ty. He was dressed in faded clothes and carried a small black bag in one hand and a worn hat in the other. If he had any idea of airing a professional protest at being compelled to wait upon the police, the thought vanished as his eye took in the stupendous stature of Superintendent Merrington, who towered above him like a mastiff standing over a toy terrier.

"Sit down, doctor," he curtly commanded. "I want to ask you a few questions about the death of Mrs. Heredith. You examined the body, I understand?"

Dr. Holmes bowed, put on a pair of gold-rimmed spectacles in order to see Superintendent Merrington better, and waited to be questioned.

"I understand you were summoned to the moat-house last night, doctor, after Mrs. Heredith was murdered, and examined the body. What was the cause of death?"

"The cause of death was a bullet wound," p.r.o.nounced the doctor oracularly.

"I am aware of that much," answered Merrington irritably. "But a bullet wound is not necessarily fatal. Mrs. Heredith lived some time after her death, so it is certain that the bullet which killed her did not penetrate the heart. What is the nature of the injuries it inflicted?"

"Death in Mrs. Heredith's case was the result of a bullet pa.s.sing through the left lung. It pa.s.sed between the second and third ribs in entering the body, traversed the lung, causing a great flow of blood, which filled the air pa.s.sages."

"Then the cause of death was haemorrhage?"

"Yes. There was very severe internal haemorrhage. The face and the left-hand side of the neck were covered with blood. There had also been bleeding from the mouth and nose. Mr. Musard, who accompanied me to the room, told me he had washed it away while Mrs. Heredith was dying, in an endeavour to staunch the flow."

"She was quite dead when you saw her?"

"Oh, yes. Judging by the warmth of the body, and by the fact that blood had ceased to flow, I should say that death had taken place about forty minutes before."

"What time did you reach the moat-house?"

"It would be about twenty minutes past eight. Sergeant Lumbe called at my house at ten minutes past the hour-I made a note of the time-and I went immediately. It is about ten minutes' walk to the moat-house from the village."

"Was the main blood vessel of the lung broken?" asked Captain Stanhill, who had been following the doctor's remarks with close attention.

"The aorta? It is difficult to say from an external examination. Mr. Musard tells me that Mrs. Heredith died about five minutes after he reached the room. The aorta is a very large vessel, and if it were burst bleeding to death would be very rapid."

"Could the wound have been self-inflicted?" asked Merrington.