were fitted with immovable wooden venetians. Presumably those on the Park side were similarly secured, whilst the back wall abutted on to that of another mansion, equally large and strongly built, tenanted by a well-known peer.
Truly, it required a genius almost unrivalled in the annals of crime to murder four people and steal diamonds worth millions in such a place whilst guarded by twelve London policemen and under the special protection of the Home Office.
The appearance of Winter at the door caused the gaping idlers in the street to endeavour to draw nearer to the mysterious portals. Thereupon three policemen on duty outside hustled the mob back, and Brett took advantage of the confusion thus created to slip to the doorway almost unperceived. One of the police constables turned round to make a grab at him, but a signal from a confrère inside prevented this, and Brett quickly found himself within a spacious entrance hall with the door closed and bolted behind him.
Winter was talking to two uniformed inspectors, to whom he had explained the barrister's mission and credentials.
"We have here, Mr. Brett," he said, "Inspector Walters, who was on duty until ten o'clock on Monday night, and Inspector Sharpe, who relieved him. They will both tell you exactly what took place."
"Thank you," said the barrister, "but it will expedite matters if you gentlemen will first accompany me over the scene of the crime. I will then be able to understand more accurately what happened. Suppose we start here. I presume that this is where the police guard was stationed?"
Inspector Walters assumed the rôle of guide.
"I was in charge of the first guard established a month ago," he said, "and the arrangements I then made have been adhered to without deviation night and day ever since."
From the outer door a short passage of a few feet led up half a dozen steps into a large reception room, the entrance to which was closed by a light double door, half glass. On both sides of the first short passage were two small apartments, such as are often used in London mansions for the purposes of cloak-rooms. The doors from these rooms opened into the inner hall. A large dining-room was situated on the left or Park side, and on the right was a breakfast or morning-room. At the back of the reception hall a handsome staircase led from left to right to the upper floors, whilst a doorway beneath the staircase gave access to the kitchens and basement offices.
"Here," said the inspector, pointing to the foot of the staircase, "two police-constables were constantly stationed. Another stood there," indicating the passage to the kitchen, "and a fourth at the glass door. As the outer basement entrance was not only securely fastened by bolts and bars, but actually bricked up inside, it was absolutely impossible for any person to enter or leave the house save by the front door, nor could any one go from the kitchen to the upper part of the house without passing under the observation of all four constables. I arranged my guards in military fashion, having three men for each post, with one hour on duty and two hours off, but the same men were never on guard together at definite hours, as they were relieved at varying times. You will understand that I considered it a very responsible task to safeguard these premises, and thought it best to render it impossible for any section of the force under my command to take part in a conspiracy, although such a thing was in itself most improbable."
They then ascended the staircase and found themselves on the first floor.
There were six spacious apartments on this storey, and all of them had originally opened on to the landing. The special precautions taken to guard the diamonds of the Turkish mission had altered all that. Five doorways had been bricked up, the result being that admission to the whole set of rooms could only be obtained through the first door that faced the top of the staircase.
This apartment was luxuriously furnished, and Inspector Walters explained that the Turkish Envoy and his suite passed the working hours of each day there after they had personally thrown open the other apartments to the diamond polishers and unlocked the safes in which the gems were stored, when work ceased on the previous day.
"His Excellency," said the inspector, "kept the keys of this room and the others, together with those of the safes, in his own possession night and day. He slept upstairs, and so did the other two gentlemen. No one was allowed to come to this floor except the confidential servant, named Hussein, who used to bring coffee, cigars, and newspapers or other things the gentlemen might require, together with their lunch in the middle of the day. The workmen brought their lunch with them, so that they came in and out once a day only."
"Where did this confidential servant sleep?" said Brett.
"I believe he used to lie curled up on the rug outside his Excellency's door."
"And the other servants?"
"They all slept in the basement."
"What were they, Turks or Christians?"
"Well, sir," said the inspector with a smile, "two of them were Turks in costume, whilst three were Christians in appearance. That is the best I can say for the Christians, as they were Frenchmen, though certainly the cook was a first-rate chef. Of course, we all got our meals here whilst on duty."
"Did his Excellency and the other members of the mission eat food prepared in the ordinary way?"
"Oh, yes; they appreciated French dishes as keenly as anybody might do."
"It was in this room, then," continued Brett, "that the murders took place?"
"Yes; I suppose that must be so," said the inspector. "But my friend here," pointing to Inspector Sharpe, "can tell that part of the story better than I can."
They passed into the inner rooms, which were quite silent and deserted, and presented a strange appearance considering the character of the house and its locality. Although the ceilings were decorated with beautiful paintings and fringed with superbly emblazoned mouldings, although the walls were papered with material that cost as much per yard as good silk, each apartment was occupied with workmen's benches, and curious devices for cutting and polishing diamonds.
In the first room were two small safes, one of which was intended to receive the gems under treatment at the close of each day's work; the other held certain valuable materials required in the diamond cutter's operations. Three of the rooms were on the Park side, and it was here that the small colony of skilled artisans had been installed.
The other two rooms were not tenanted, nor had any communicating doors been broken through the walls in order to gain access to them.
The windows of the three apartments occupied by the workmen were not only guarded by strong iron bars, but possessed the additional security of external wire blinds of exceedingly small mesh. Each window admitted plenty of light, and could be raised to allow a free circulation of air, but it was seemingly quite impossible for any active communication to take place with the outside. The three rooms looked out over a small enclosed lawn, which was separated from the park by a brick wall surmounted by iron railings. All the fireplaces had been closed with bricks and mortar.
"You will see, sir," said the inspector, when he had called Brett's attention to these details, "that mysterious though the murders were, they were as nothing compared with the disappearance of the diamonds. Every person who came downstairs was most carefully and methodically searched each time he passed the constable on duty at the bottom. It may be admitted that a few small stones could be so secreted as to escape observation, but some of these stones were so large that such a notion is not to be thought of, whilst the size of the great diamond which Mr. Talbot christened the 'Hen's Egg' rendered its transference past the searchers beneath absolutely impossible. There was no humbug
