The tobacco ash on the mantelpiece was the third thing Holmes noticed.
The first had been the smell: coal smoke and something beneath it, something that did not belong to coal at all—a sharp, metallic sweetness, like the air before a lightning strike, or the inside of a galvanist's laboratory on a productive afternoon. The second had been the light, or rather the failure of light, the way the flames in the sitting-room fireplace had ceased to behave as flames ought and had instead taken on a quality of stillness, a peculiar arrested shimmer, as though someone had pressed a finger against the surface of water and held it there.
The ash on the mantelpiece had begun, quite without assistance, to vibrate.
Holmes set down the watermarked invoice he had been annotating—third forgery in the Whitechapel ring, the engraver's hand more consistent than he'd like his counterpart at Scotland Yard to appreciate just yet—and turned to face the fireplace with the particular quality of attention he reserved for phenomena that were either very interesting or very dangerous, the two categories being, in his experience, seldom mutually exclusive.
The shimmer had grown.
It occupied perhaps a third of the fireplace now, a distortion of the sort one sometimes observed above hot cobblestones in August, except that Baker Street in November was not hot, and the air around the fireplace was, if anything, faintly colder than it had been a moment ago. Mrs Hudson had banked the fire well before eight. The coals were still present, still glowing, still visible through the shimmer in the displaced, warped way that objects appeared through cheap window-glass or badly-ground lenses—and yet the quality of the light coming off them was wrong. Subtly, specifically wrong.
Holmes was at the fireplace in four strides.
He produced his magnifying glass from his breast pocket in a single motion so practised it required no conscious direction from his higher faculties and held it before the distortion. The lens clouded immediately. Not condensation—the temperature differential was wrong for condensation, and in any case the clouding was uniform across the glass, a thin film of something that evaporated even as he registered it, leaving no residue he could detect by smell or touch. He made a note of this. The sweetness in the air had intensified; it reminded him now of ozone, and of the smell of a telegram freshly received—hot paper, electrical proximity, information in transit.
The shimmer occupied the entire fireplace.
It had taken approximately forty seconds to do so. Holmes stood close enough that the cold radiating off it raised the hairs on the back of his hand, and he stood there with the cool, cataloguing attention of a man who had faced violent criminals, venomous fauna, and at least two occasions on which the structural integrity of buildings he occupied had been called into immediate question. He was not, he considered, unduly alarmed. He was, in fact, extremely interested.
The shimmer pulsed once—a single, deep, silent expansion, like the first intake of breath before a concert begins—and then it reached for him.
Or, more precisely: it expanded sharply in his direction and Holmes, who had been leaning forward by some six inches to examine the edge of the distortion where it met the hearthstone, was simply incorporated into that expansion before he could take a backward step. The sitting room existed for one further fraction of a second—he had time to observe his own reflection in the mantelpiece mirror, tall and angular against the shimmer, his magnifying glass still raised—and then it did not exist, and neither, for a brief and entirely unmemorable interval, did he.
The cold arrived first.
Not the polite, negotiated cold of a London November, the kind that made allowances for the existence of overcoats and the tradition of heated rooms—this was a cold that had been here considerably longer than any such considerations, a cold that had settled into the ground and the air and the silence with the patient thoroughness of something that intended to remain. It came through the soles of his shoes immediately, and through the fabric of his coat somewhat less immediately, and it smelled of frost and wet stone and, very faintly, of pine resin.
Holmes was on his knees.
He registered this fact with some displeasure. He had apparently arrived on all fours in the manner of a man ejected from a conveyance travelling at speed—which was, upon reflection, a reasonably accurate description of what had just occurred. He rose, unhurried, and took stock of himself with the brief clinical attention he usually reserved for patients in whom he had a professional interest. No injuries. His pipe had remained in his coat pocket, which was either fortunate or merely improbable. His magnifying glass was still in his hand, which was not luck but habit. The Whitechapel invoice was not present, which was to be expected and was not presently the most pressing matter.
He looked at the ground.
The soil beneath his knees was dark and dense with an iron-clay substructure visible at the edges of each frost-cracked clump, and the grass growing through it was of a variety that required prolonged and specific moisture conditions—not the thin, aspirational grass of a managed lawn but the grass of ground that had been wet consistently for centuries, the kind that grew over old fortifications in certain northern counties. He pressed two fingers into the soil and brought them to his nose. Peat undertone. Glacial till composition. Mineral content inconsistent with the Pennines, inconsistent with the Scottish Borders, inconsistent with any English or Scottish county he had mapped with any specificity.
He was not in London. This was, of course, already obvious, but Holmes had a methodological preference for establishing the obvious explicitly before proceeding to the interesting.
He stood up, brushed his coat, and looked ahead.
The castle was approximately three hundred yards from where he stood, beyond a set of iron gates flanked by stone pillars on which stone animals sat with the quality of having recently moved, though they were motionless at present and he declined to pursue that observation further until he had more data. The castle itself was large—very large, disproportionately large, the kind of large that could not be adequately conveyed by the word large and which would have required a surveyor of considerable ambition to measure with any accuracy. It occupied the hillside above a lake whose surface was very still and very black and whose far shore was not visible in the half-darkness.
Holmes stood and looked at it for somewhat longer than he had looked at most things in his professional life.
Then he took out his case-book—which he had, as was his habit when working, kept in the inner pocket of his coat—and opened it to a fresh page.
Soil composition: iron-clay, glacial till, peat undertone. Not catalogued in any English county. Scottish Highlands possible but structural geology inconsistent with known formations. File pending further samples.
He considered the castle again.
The principal tower on the eastern elevation was at an angle to its foundations that should not have permitted it to remain upright for more than a season, let alone whatever number of centuries its stonework implied. The north wing's profile was impossible: the shadow it cast in the pre-dawn light described a geometry that would have required the sun to be in at least two positions simultaneously. The bridge to the east courtyard was unsupported at a central span that, by any honest calculation of tensile stress on medieval stonework, ought to have deposited itself into the ravine below sometime around the fifteenth century.
He counted. He lost count. He started again.
Structural violations: seventeen, at minimum, with three additional anomalies requiring closer examination before classification. Castle apparently held together by principle unknown. File separately.
There was a light moving along the battlements—small, bobbing, consistent with a handheld lantern carried by someone who had been doing this long enough to find it unremarkable. The gates, he observed as he walked toward them, were wrought iron of exceptional quality, decorated with a crest he did not immediately recognise and secured with a chain and padlock that appeared, even from thirty yards, to be entirely conventional mechanisms. The stone animals on the pillars were winged boars, and they were, he noted without comment, regarding him.
He stopped below them and looked up.
The boar on the right pillar had its stone mouth slightly open. The one on the left had its ears forward. These were specific postures. They did not, taken in combination, suggest threat so much as assessment, which was a quality Holmes had some experience of and could not, at the present moment, object to on principle.
He looked back at the empty air behind him, where Baker Street had been thirty minutes ago by his pocket watch. There was nothing there—no shimmer, no distortion, no residual trace that he could detect. The invoice was gone. Whatever had brought him here had closed behind him with the tidy, final quality of a document sealed and filed.
He looked back at the castle.
The light on the battlements had paused. Someone up there had, presumably, noticed him.
Holmes put his case-book away, settled his coat against the cold with the pragmatic adjustments of a man who had stood on worse hillsides in worse conditions for less interesting reasons, and placed his pipe between his teeth. He did not light it—his matches were in the pocket of his second coat, which was in Baker Street—but the familiar weight of it between his incisors was steadying, and he found that it clarified his thinking, which was currently directed toward the following question:
The shimmer in the Baker Street fireplace had reached for him, or had expanded to incorporate him, or had—and this he noted with the careful caveating of a man unwilling to overclaim—responded to his approach. It had the character not of an accident but of a mechanism. Mechanisms had purposes. Purposes implied intentions. Intentions implied agents.
He did not know where he was. He did not know how he had come here. He did not know what had sent him.
He knew the soil composition. He knew the castle violated seventeen structural principles. He knew the gates were conventional iron and the padlock was conventional steel and the boars were stone but currently demonstrating non-stone behaviour, which was a data point he was storing in a separate category until he had sufficient context to classify it.
He knew that whoever held the lantern on the battlements had, by now, had thirty seconds to observe a well-dressed man standing at the school gates in the pre-dawn darkness in November, and had not raised an alarm, which was either a sign of characteristic institutional calm or of a school that received unexpected visitors with sufficient regularity that the staff had developed a policy.
The light had begun to descend from the battlements. Someone was coming down.
Holmes stood at the gates, turned up his collar, and waited with the patient, evaluating attention of a man who had decided that wherever he was, it was a problem, and problems, in his experience, rewarded engagement considerably more generously than they rewarded retreat.
His case-book entry for the morning of November 14th concluded, for now, with a single additional line:
Unknown location. Anomaly non-reproducible at present. Proceed with available data.
He stood there in the dark and the cold with his unlighted pipe and his magnifying glass and his absolute certainty that there was, somewhere in all of this, a mechanically explicable truth, and he watched the lantern come toward him down the hill.