"Apparently the murderer has got clean away without leaving a trace behind him?" he said.

"Yes."

"No sign of any weapon?"

"No."

"Anything taken?"

"No. Miss Heredith says nothing was taken from the room, and nothing is missing from the house."

"The motive was not robbery then," remarked Captain Stanhill.

"It may have been," responded Merrington. "Caldew says the first intimation of the crime was the murdered woman screaming. The scream was followed in a few seconds by the revolver shot. If she screamed when she saw the murderer enter her room, he may well have feared interruption and capture, and bolted without stealing anything."

"Why did he murder her, then, in that case?" asked Captain Stanhill.

"To prevent subsequent identification. Many burglars proceed to murder for that reason. I know plenty of old hands who would commit half a dozen murders rather than face the prospect of five years' imprisonment. I do not say that burglary was the motive in this case, but we must not lose sight of the possibility."

"It seems a strange case," murmured Inspector Weyling absently. He was thinking, as he spoke, of his rabbits, and wondering whether his wife would remember to give the lop-eared doe with the litter a little milk in the course of the morning.

"It's a very sad case," said Captain Stanhill. "Poor young thing!" The Chief Constable was a human being before he was a police official, and his face showed plainly that he was stricken with horror by the story of the crime.

"It's a d.a.m.ned remarkable case," exclaimed Merrington, in his booming voice. "I do not remember its parallel. An English lady is murdered in her home, with a crowd of people sitting at dinner in the room underneath, and the murderer gets clean away, without leaving a trace. No weapon, no finger-prints or footprints, and no clue of any kind."

Caldew had been hoping to get an opportunity of telling Merrington privately about the missing trinket, but he realized that he was not doing his duty by delaying the explanation.

"There was something which might have helped us as a clue," he said. "Last night, while I was examining Mrs. Heredith's bedroom, I saw a small trinket lying on the floor near the bedside."

"What sort of a trinket?" asked Merrington.

"A small bar brooch."

"Where is it?"

"I do not know," replied Caldew awkwardly. "I left it where I saw it, hidden in the carpet, thinking it possible that the person who had lost it might return in search of it, but while I was downstairs it disappeared."

"It is rather strange," said Merrington thoughtfully. "I am not inclined to think there is anything in it to help us," he added, after a moment's consideration. "Still, I will look into it later. Why did you leave the trinket in the room, Caldew?"

"I thought it possible that if the owner had anything to do with the crime he-or she-might return for it," said Caldew. "So I left it where I found it, and watched the room from the end of the pa.s.sage."

"A murderer doesn't go about wearing a cheap trinket, and, if he did, he wouldn't risk his neck coming back to look for it. The brooch was more likely dropped by one of the maidservants, who picked it up again."

"Would a girl go into a room where there was a dead body?"

"A country wench would. English countrywomen have pretty strong nerves. You ought to know that. But why did you leave the room if you expected the owner of the trinket to return in search of it?"

"I was called downstairs to see Mr. Musard. An unused outside door which is generally kept locked was discovered unlocked by the butler before the murder was committed. As the door opens on a staircase leading to the left wing, Mr. Musard thought the butler's discovery had some bearing on the crime."

"He thought the murderer may have entered the house that way? Such a theory would suggest that one of the servants is implicated."

"Yes; but I do not agree with Mr. Musard."

"What is your own opinion?"

"I think the key must have been left in the door by one of the servants-perhaps some days ago. The fact that the butler locked the door when he found it unfastened did not prevent the murder being committed, or the murderer escaping afterwards."

"The murderer may have entered by the door before the butler discovered that it had been unlocked, and then concealed himself inside the house awaiting an opportunity to commit the crime."

"In that case, he would have tried to escape the same way, but it is quite certain that he did not do so. Mr. Musard says that the staircase was the first place to be searched when the guests rushed upstairs. If the murderer had gone that way he would have found the door at the bottom locked, and the key removed, and he must have been caught before he could get back upstairs."

"There's something in that," said Merrington. "But how do you account for the door being unlocked in the first instance?"

"The servants know where the key is kept. One of the maids may have taken it to steal out of the house that way to keep an appointment with a sweetheart, and forgotten all about it when she returned. The back staircase and entrance are never used by the members of the household, and the key, which was inside the door, may have been there for days without being noticed. Tufnell admits that it was only by chance he tried the door yesterday. He had not tried it for weeks before."

"I'll have a look at this door later. And now, we had better get to work. We have got to catch this murderer pretty quickly, or the press and the public will be up in arms. He's had too long a start already. You must make up your mind for considerable public indignation about that, Caldew."

"I do not see how I can be held responsible for the murderer getting away," said Caldew, in an aggrieved tone. "He had his start before I arrived. I did everything that I could. I searched the house inside and out, and Sergeant Lumbe has been scouring the country-side since daybreak looking for suspicious characters."

"I am not blaming you, Caldew," responded Merrington, but his voice suggested the reverse of his words. "I am merely pointing out to you the way the British public will look at it. They will say, 'Here is a young wife murdered in the bosom of her home and family, and the murderer gets right away. What do we pay the detective force for? To let murderers escape?' Mark my words, if we don't lay our hands on this chap quickly, we'll have the whole of the London press howling at our heels like a pack of wolves. Half a dozen special reporters travelled down in the train with me and pestered me with questions all the way. They are coming along here later for a statement for the evening editions. But never mind the journalists-let us get to work without further loss of time. Have you made a list of all the guests who have been stopping in the house?"

"Not yet. Here is a sketch plan of the moat-house interior and the grounds which you may find useful."

"Thanks. You had better prepare a list of the guests before they leave. They are sure to get away as fast as possible, and we may want to interview some of them later on. Now we had better have a look at the body."

They went upstairs to the bedroom. There they found a young man, with a freckled face and a snub nose, packing up a photographic apparatus. He was the photographer, and he had been taking photographs of the dead body.

"Finished?" inquired Merrington. "That's right. Then you and Freeling had better return to London by the next train-you'll be wanted in that Putney case."

The photographer and the finger-print expert left the room together, and Merrington walked across to the bed. He drew away the sheet which covered the dead girl, and bent over the body, examining it closely, but without touching it.

"The corpse has not been moved, I suppose?" he remarked to Caldew, who was standing beside him.

"Not since I arrived. But she may not have been shot in that position. She lived some minutes afterwards, and may have moved slightly-not much, I should say, for there are no marks of bloodstains on any other part of the bed."

Merrington nodded. He was looking at the bullet wound, which was plainly visible through a burnt orifice in the rest-gown which the dead girl was wearing. The wound was a circular punctured hole in the left breast, less than the size of a sixpenny piece.

"The wound has been washed," he observed. "Was that done by the police surgeon?"

"The police surgeon has not been here. The corpse was examined by the village medical man, Dr. Holmes."

"I should like to see him. Where is he to be found?"

"He will be here in the course of the morning. He is attending young Heredith, who is suffering from the shock. The doctor fears brain fever."

"When he comes I want to see him. It is idle speculating about the cause of death in the absence of a doctor. Death in this case appears to have been due to haemorrhage. Apparently the murderer aimed at the heart and missed it, and the shot went through the lungs. The shot was fired at very close range too-look how the wrapper is burnt! Any sign of the bullet, Caldew?"

"I found none."