Chapter 17

"Well," said Thorndyke, "as I have finished with the case, and am handing it over to you, I will put the evidence before you _seriatim_. Now, I think we are agreed that, at the moment when the blow was struck, the deceased was standing before the fireplace, winding the clock. The dagger entered obliquely from the left, and, if you recall its position, you will remember that its hilt pointed directly towards an open window."

"Which was forty feet from the ground."

"Yes. And now we will consider the very peculiar character of the weapon with which the crime was committed."

He had placed his hand upon the knob of a drawer, when we were interrupted by a knock at the door. I sprang up, and, opening it, admitted no less a person than the porter of Brackenhurst Chambers. The man looked somewhat surprised on recognizing our visitors, but advanced to Thorndyke, drawing a folded paper from his pocket.

"I've found the article you were looking for, sir," said he, "and a rare hunt I had for it. It had stuck in the leaves of one of them shrubs."

Thorndyke opened the packet, and, having glanced inside, laid it on the table.

"Thank you," said he, pushing a sovereign across to the gratified official. "The inspector has your name, I think?"

"He have, sir," replied the porter; and, pocketing his fee, he departed, beaming.

"To return to the dagger," said Thorndyke, opening the drawer. "It was a very peculiar one, as I have said, and as you will see from this model, which is an exact duplicate." Here he exhibited Polton's production to the astonished detective. "You see that it is extraordinarily slender, and free from projections, and of unusual materials. You also see that it was obviously not made by an ordinary dagger-maker; that, in spite of the Italian word scrawled on it, there is plainly written all over it 'British mechanic.' The blade is made from a strip of common three-quarter-inch tool steel; the hilt is turned from an aluminium rod; and there is not a line of engraving on it that could not be produced in a lathe by any engineer's apprentice. Even the boss at the top is mechanical, for it is just like an ordinary hexagon nut. Then, notice the dimensions, as shown on my drawing. The parts A and B, which just project beyond the blade, are exactly similar in diameter--and such exactness could hardly be accidental. They are each parts of a circle having a diameter of 10.9 millimetres--a dimension which happens, by a singular coincidence, to be exactly the calibre of the old Chassepôt rifle, specimens of which are now on sale at several shops in London. Here is one, for instance."

He fetched the rifle that he had bought, from the corner in which it was standing, and, lifting the dagger by its point, slipped the hilt into the muzzle. When he let go, the dagger slid quietly down the barrel, until its hilt appeared in the open breech.

"Good God!" exclaimed Marchmont. "You don't suggest that the dagger was shot from a gun?"

"I do, indeed; and you now see the reason for the aluminium hilt--to diminish the weight of the already heavy projectile--and also for this hexagonal boss on the end?"

"No, I do not," said the inspector; "but I say that you are suggesting an impossibility."

"Then," replied Thorndyke, "I must explain and demonstrate. To begin with, this projectile had to travel point foremost; therefore it had to be made to spin--and it certainly was spinning when it entered the body, as the clothing and the wound showed us. Now, to make it spin, it had to be fired from a rifled barrel; but as the hilt would not engage in the rifling, it had to be fitted with something that would. That something was evidently a soft metal washer, which fitted on to this hexagon, and which would be pressed into the grooves of the rifling, and so spin the dagger, but would drop off as soon as the weapon left the barrel. Here is such a washer, which Polton has made for us."

He laid on the table a metal disc, with a hexagonal hole through it.

"This is all very ingenious," said the inspector, "but I say it is impossible and fantastic."

"It certainly sounds rather improbable," Marchmont agreed.

"We will see," said Thorndyke. "Here is a makeshift cartridge of Polton's manufacture, containing an eighth charge of smokeless powder for a 20-bore gun."

He fitted the washer on to the boss of the dagger in the open breech of the rifle, pushed it into the barrel, inserted the cartridge, and closed the breech. Then, opening the office-door, he displayed a target of padded strawboard against the wall.

"The length of the two rooms," said he, "gives us a distance of thirty-two feet. Will you shut the windows, Jervis?"

I complied, and he then pointed the rifle at the target. There was a dull report--much less loud than I had expected--and when we looked at the target, we saw the dagger driven in up to its hilt at the margin of the bull's-eye.

"You see," said Thorndyke, laying down the rifle, "that the thing is practicable. Now for the evidence as to the actual occurrence. First, on the original dagger there are linear scratches which exactly correspond with the grooves of the rifling. Then there is the fact that the dagger was certainly spinning from left to right--in the direction of the rifling, that is--when it entered the body. And then there is this, which, as you heard, the porter found in the garden."

He opened the paper packet. In it lay a metal disc, perforated by a hexagonal hole. Stepping into the office, he picked up from the floor the washer that he had put on the dagger, and laid it on the paper beside the other. The two discs were identical in size, and the margin of each was indented with identical markings, corresponding to the rifling of the barrel.

The inspector gazed at the two discs in silence for a while; then, looking up at Thorndyke, he said:

"I give in, Doctor. You're right, beyond all doubt; but how you came to think of it beats me into fits. The only question now is, Who fired the gun, and why wasn't the report heard?"

"As to the latter," said Thorndyke, "it is probable that he used a compressed-air attachment, not only to diminish the noise, but also to prevent any traces of the explosive from being left on the dagger. As to the former, I think I can give you the murderer's name; but we had better take the evidence in order. You may remember," he continued, "that when Dr. Jervis stood as if winding the clock, I chalked a mark on the floor where he stood. Now, standing on that marked spot, and looking out of the open window, I could see two of the windows of a house nearly opposite. They were the second- and third-floor windows of No. 6, Cotman Street. The second-floor is occupied by a firm of architects; the third-floor by a commission agent named Thomas Barlow. I called on Mr. Barlow, but before describing my visit, I will refer to another matter. You haven't those threatening letters about you, I suppose?"

"Yes, I have," said the inspector; and he drew forth a wallet from his breast-pocket.

"Lot us take the first one, then," said Thorndyke. "You see that the paper and envelope are of the very commonest, and the writing illiterate. But the ink does not agree with this. Illiterate people usually buy their ink in penny bottles. Now, this envelope is addressed with Draper's dichroic ink--a superior office ink, sold only in large bottles--and the red ink in which the note is written is an unfixed, scarlet ink, such as is used by draughtsmen, and has been used, as you can see, in a stylographic pen. But the most interesting thing about this letter is the design drawn at the top. In an artistic sense, the man could not draw, and the anatomical details of the skull are ridiculous. Yet the drawing is very neat. It has the clean, wiry line of a machine drawing, and is done with a steady, practised hand. It is also perfectly symmetrical; the skull, for instance, is exactly in the centre, and, when we examine it through a lens, we see why it is so, for we discover traces of a pencilled centre-line and ruled cross-lines. Moreover, the lens reveals a tiny particle of draughtsman's soft, red, rubber, with which the pencil lines were taken out; and all these facts, taken together, suggest that the drawing was made by someone accustomed to making accurate mechanical drawings. And now we will return to Mr. Barlow. He was out when I called, but I took the liberty of glancing round the office, and this is what I saw. On the mantelshelf was a twelve-inch flat boxwood rule, such as engineers use, a piece of soft, red rubber, and a stone bottle of Draper's dichroic ink. I obtained, by a simple ruse, a specimen of the office notepaper and the ink. We will examine it presently. I found that Mr. Barlow is a new tenant, that he is rather short, wears a wig and spectacles, and always wears a glove on his left hand. He left the office at 8.30 this morning, and no one saw him arrive. He had with him a square case, and a narrow, oblong one about five feet in length; and he took a cab to Victoria, and apparently caught the 8.51 train to Chatham."

"Ah!" exclaimed the inspector.

"But," continued Thorndyke, "now examine those three letters, and compare them with this note that I wrote in Mr. Barlow's office. You see that the paper is of the same make, with the same water-mark, but that is of no great significance. What is of crucial importance is this: You see, in each of these letters, two tiny indentations near the bottom corner. Somebody has used compasses or drawing-pins over the packet of notepaper, and the points have made little indentations, which have marked several of the sheets. Now, notepaper is cut to its size after it is folded, and if you stick a pin into the top sheet of a section, the indentations on all the underlying sheets will be at exactly similar distances from the edges and corners of the sheet. But you see that these little dents are all at the same distance from the edges and the corner." He demonstrated the fact with a pair of compasses. "And now look at this sheet, which I obtained at Mr. Barlow's office. There are two little indentations--rather faint, but quite visible--near the bottom corner, and when we measure them with the compasses, we find that they are exactly the same distance apart as the others, and the same distance from the edges and the bottom corner. The irresistible conclusion is that these four sheets came from the same packet."

The inspector started up from his chair, and faced Thorndyke. "Who is this Mr. Barlow?" he asked.

"That," replied Thorndyke, "is for you to determine; but I can give you a useful hint. There is only one person who benefits by the death of Alfred Hartridge, but he benefits to the extent of twenty thousand pounds. His name is Leonard Wolfe, and I learn from Mr. Marchmont that he is a man of indifferent character--a gambler and a spendthrift. By profession he is an engineer, and he is a capable mechanician. In appearance he is thin, short, fair, and clean-shaven, and he has lost the middle finger of his left hand. Mr. Barlow is also short, thin, and fair, but wears a wig, a beard, and spectacles, and always wears a glove on his left hand. I have seen the handwriting of both these gentlemen, and should say that it would be difficult to distinguish one from the other."

"That's good enough for me," said the inspector. "Give me his address, and I'll have Miss Curtis released at once."

* * * * *

The same night Leonard Wolfe was arrested at Eltham, in the very act of burying in his garden a large and powerful compressed-air rifle. He was never brought to trial, however, for he had in his pocket a more portable weapon--a large-bore Derringer pistol--with which he managed to terminate an exceedingly ill-spent life.

"And, after all," was Thorndyke's comment, when he heard of the event, "he had his uses. He has relieved society of two very bad men, and he has given us a most instructive case. He has shown us how a clever and ingenious criminal may take endless pains to mislead and delude the police, and yet, by inattention to trivial details, may scatter clues broadcast. We can only say to the criminal class generally, in both respects, 'Go thou and do likewise.'"

VIII

A MESSAGE FROM THE DEEP SEA

The Whitechapel Road, though redeemed by scattered relics of a more picturesque past from the utter desolation of its neighbour the Commercial Road, is hardly a gay thoroughfare. Especially at its eastern end, where its sordid modernity seems to reflect the colourless lives of its inhabitants, does its grey and dreary length depress the spirits of the wayfarer. But the longest and dullest road can be made delightful by sprightly discourse seasoned with wit and wisdom, and so it was that, as I walked westward by the side of my friend John Thorndyke, the long, monotonous road seemed all too short.

We had been to the London Hospital to see a remarkable case of acromegaly, and, as we returned, we discussed this curious affection, and the allied condition of gigantism, in all their bearings, from the origin of the "Gibson chin" to the physique of Og, King of Bashan.

"It would have been interesting," Thorndyke remarked as we passed up Aldgate High Street, "to have put one's finger into His Majesty's pituitary fossa--after his decease, of course. By the way, here is Harrow Alley; you remember Defoe's description of the dead-cart waiting out here, and the ghastly procession coming down the alley." He took my arm and led me up the narrow thoroughfare as far as the sharp turn by the "Star and Still" public-house, where we turned to look back.

"I never pass this place," he said musingly, "but I seem to hear the clang of the bell and the dismal cry of the carter--"

He broke off abruptly. Two figures had suddenly appeared framed in the archway, and now advanced at headlong speed. One, who led, was a stout, middle-aged Jewess, very breathless and dishevelled; the other was a well-dressed young man, hardly less agitated than his companion. As they approached, the young man suddenly recognized my colleague, and accosted him in agitated tones.

"I've just been sent for to a case of murder or suicide. Would you mind looking at it for me, sir? It's my first case, and I feel rather nervous."

Here the woman darted back, and plucked the young doctor by the arm.

"Hurry! hurry!" she exclaimed, "don't stop to talk." Her face was as white as lard, and shiny with sweat; her lips twitched, her hands shook, and she stared with the eyes of a frightened child.

"Of course I will come, Hart," said Thorndyke; and, turning back, we followed the woman as she elbowed her way frantically among the foot-passengers.

"Have you started in practice here?" Thorndyke asked as we hurried along.

"No, sir," replied Dr. Hart; "I am an assistant. My principal is the police-surgeon, but he is out just now. It's very good of you to come with me, sir."

"Tut, tut," rejoined Thorndyke. "I am just coming to see that you do credit to my teaching. That looks like the house."

We had followed our guide into a side street, halfway down which we could see a knot of people clustered round a doorway. They watched us as we approached, and drew aside to let us enter. The woman whom we were following rushed into the passage with the same headlong haste with which she had traversed the streets, and so up the stairs. But as she neared the top of the flight she slowed down suddenly, and began to creep up on tiptoe with noiseless and hesitating steps. On the landing she turned to face us, and pointing a shaking forefinger at the door of the back room, whispered almost inaudibly, "She's in there," and then sank half-fainting on the bottom stair of the next flight.

I laid my hand on the knob of the door, and looked back at Thorndyke. He was coming slowly up the stairs, closely scrutinizing floor, walls, and handrail as he came. When he reached the landing, I turned the handle, and we entered the room together, closing the door after us. The blind was still down, and in the dim, uncertain light nothing out of the common was, at first, to be seen. The shabby little room looked trim and orderly enough, save for a heap of cast-off feminine clothing piled upon a chair. The bed appeared undisturbed except by the half-seen shape of its occupant, and the quiet face, dimly visible in its shadowy corner, might have been that of a sleeper but for its utter stillness and for a dark stain on the pillow by its side.

Dr. Hart stole on tiptoe to the bedside, while Thorndyke drew up the blind; and as the garish daylight poured into the room, the young surgeon fell back with a gasp of horror.

"Good God!" he exclaimed; "poor creature! But this is a frightful thing, sir!"

The light streamed down upon the white face of a handsome girl of twenty-five, a face peaceful, placid, and beautiful with the austere and almost unearthly beauty of the youthful dead. The lips were slightly parted, the eyes half closed and drowsy, shaded with sweeping lashes; and a wealth of dark hair in massive plaits served as a foil to the translucent skin.

Our friend had drawn back the bedclothes a few inches, and now there was revealed, beneath the comely face, so serene and inscrutable, and yet so dreadful in its fixity and waxen pallor, a horrible, yawning wound that almost divided the shapely neck.

Thorndyke looked down with stern pity at the plump white face.

"It was savagely done," said he, "and yet mercifully, by reason of its very savagery. She must have died without waking."

"The brute!" exclaimed Hart, clenching his fists and turning crimson with wrath. "The infernal cowardly beast! He shall hang! By God, he shall hang!" In his fury the young fellow shook his fists in the air, even as the moisture welled up into his eyes.

Thorndyke touched him on the shoulder. "That is what we are here for, Hart," said he. "Get out your notebook;" and with this he bent down over the dead girl.

At the friendly reproof the young surgeon pulled himself together, and, with open notebook, commenced his investigation, while I, at Thorndyke's request, occupied myself in making a plan of the room, with a description of its contents and their arrangements. But this occupation did not prevent me from keeping an eye on Thorndyke's movements, and presently I suspended my labours to watch him as, with his pocket-knife, he scraped together some objects that he had found on the pillow.

"What do you make of this?" he asked, as I stepped over to his side. He pointed with the blade to a tiny heap of what looked like silver sand, and, as I looked more closely, I saw that similar particles were sprinkled on other parts of the pillow.

"Silver sand!" I exclaimed. "I don't understand at all how it can have got there. Do you?"

Thorndyke shook his head. "We will consider the explanation later," was his reply. He had produced from his pocket a small metal box which he always carried, and which contained such requisites as cover-slips, capillary tubes, moulding wax, and other "diagnostic materials." He now took from it a seed-envelope, into which he neatly shovelled the little pinch of sand with his knife. He had closed the envelope, and was writing a pencilled description on the outside, when we were startled by a cry from Hart.

"Good God, sir! Look at this! It was done by a woman!"

He had drawn back the bedclothes, and was staring aghast at the dead girl's left hand. It held a thin tress of long, red hair.

Thorndyke hastily pocketed his specimen, and, stepping round the little bedside table, bent over the hand with knitted brows. It was closed, though not tightly clenched, and when an attempt was made gently to separate the fingers, they were found to be as rigid as the fingers of a wooden hand. Thorndyke stooped yet more closely, and, taking out his lens, scrutinized the wisp of hair throughout its entire length.

"There is more here than meets the eye at the first glance," he remarked. "What say you, Hart?" He held out his lens to his quondam pupil, who was about to take it from him when the door opened, and three men entered. One was a police-inspector, the second appeared to be a plain-clothes officer, while the third was evidently the divisional surgeon.

"Friends of yours, Hart?" inquired the latter, regarding us with some disfavour.

Thorndyke gave a brief explanation of our presence to which the newcomer rejoined:

"Well, sir, your _locus standi_ here is a matter for the inspector. My assistant was not authorized to call in outsiders. You needn't wait, Hart."

With this he proceeded to his inspection, while Thorndyke withdrew the pocket-thermometer that he had slipped under the body, and took the reading.

The inspector, however, was not disposed to exercise the prerogative at which the surgeon had hinted; for an expert has his uses.

"How long should you say she'd been dead, sir?" he asked affably.

"About ten hours," replied Thorndyke.

The inspector and the detective simultaneously looked at their watches. "That fixes it at two o'clock this morning," said the former. "What's that, sir?"

The surgeon was pointing to the wisp of hair in the dead girl's hand.

"My word!" exclaimed the inspector. "A woman, eh? She must be a tough customer. This looks like a soft job for you, sergeant."

"Yes," said the detective. "That accounts for that box with the hassock on it at the head of the bed. She had to stand on them to reach over. But she couldn't have been very tall."

"She must have been mighty strong, though," said the inspector; "why, she has nearly cut the poor wench's head off." He moved round to the head of the bed, and, stooping over, peered down at the gaping wound. Suddenly he began to draw his hand over the pillow, and then rub his fingers together. "Why," he exclaimed, "there's sand on the pillow--silver sand! Now, how can that have come there?"

The surgeon and the detective both came round to verify this discovery, and an earnest consultation took place as to its meaning.

"Did you notice it, sir?" the inspector asked Thorndyke.

"Yes," replied the latter; "it's an unaccountable thing, isn't it?"

"I don't know that it is, either," said the detective, he ran over to the washstand, and then uttered a grunt of satisfaction. "It's quite a simple matter, after all, you see," he said, glancing complacently at my colleague. "There's a ball of sand-soap on the washstand, and the basin is full of blood-stained water. You see, she must have washed the blood off her hands, and off the knife, too--a pretty cool customer she must be--and she used the sand-soap. Then, while she was drying her hands, she must have stood over the head of the bed, and let the sand fall on to the pillow. I think that's clear enough."

"Admirably clear," said Thorndyke; "and what do you suppose was the sequence of events?"

The gratified detective glanced round the room. "I take it," said he, "that the deceased read herself to sleep. There is a book on the table by the bed, and a candlestick with nothing in it but a bit of burnt wick at the bottom of the socket. I imagine that the woman came in quietly, lit the gas, put the box and the hassock at the bedhead, stood on them, and cut her victim's throat. Deceased must have waked up and clutched the murderess's hair--though there doesn't seem to have been much of a struggle; but no doubt she died almost at once. Then the murderess washed her hands, cleaned the knife, tidied up the bed a bit, and went away. That's about how things happened, I think, but how she got in without anyone hearing, and how she got out, and where she went to, are the things that we've got to find out."