1. The Slip

Chapter One: The Slip

The rain over Glastonmere fell with the persistence of a debt collector, indifferent to the hour or the season.

Elara Blackwood drove through the iron gates of Thornwood Estate at precisely eleven minutes past midnight, her sedan's headlights raking across a facade that had not been maintained since before her birth. The manor rose from the sodden earth like an accusation: thirty-seven windows, not a single one lit. Ivy had conquered the east wing. The conservatory, an octagonal glass structure appended to the southern face, glowed faintly under the cloud-scudded moon.

She had not set foot on this property in fourteen years. She had not intended to break that streak tonight.

The call had come at seven that evening, while she was in her office on the forty-first floor of Crane & Voss, preparing a motion to dismiss for a client who manufactured defective toasters. Her assistant, a young man named Terrence who collected vintage fountain pens and nervous tics, had knocked twice and entered without waiting for permission.

"Miss Blackwood. It's the Glastonmere Constabulary. Your grandfather."

Silas Blackwood had been found at the bottom of the conservatory stairs at four in the afternoon, his neck broken, his right hand still clutching a fragment of mirror glass. The constable on the telephone, a man who identified himself as Inspector Harland, had used the word "accident" four times in three minutes. Old houses, he said. Slippery floors. A tragic misstep.

Elara had thanked him, ended the call, and stared at the city skyline for exactly seven minutes. Then she had packed her briefcase and driven north, because she knew with the certainty of blood that Silas Blackwood did not misstep.

He had been eighty-seven years old, vain as a cathedral, and more careful with his person than a bomb disposal technician. He had navigated those stairs for six decades. He knew every creaking tread by name.

The gravel of the drive crunched beneath her tires. As she killed the engine, the manor door swung open, and a figure stood silhouetted against the faint candlelight within.

"Elara." The voice was dry as parchment. "You came."

It was Aldous, her uncle. The last time she had seen him, she was nineteen, and he had been drinking brandy in the library while her mother's funeral reception withered in the adjoining parlor. He had not aged so much as desiccated, his frame shrinking inside a suit that had once fit him, his eyes retreating into shadowed sockets.

"Inspector Harland called," Elara said, stepping out of the car. The rain plastered her hair to her scalp. "Where is he?"

"The body has been removed." Aldous stepped aside to let her pass. "The conservatory has been secured. Harland is in the morning room, writing his report. He would like a word."

The entrance hall of Thornwood had not changed. The same black-and-white marble tiles, cracked now, their pattern disrupted by decades of settlement. The same portrait of Victor Blackwood, the founding patriarch, hanging above the grand staircase, his oil-painted eyes following visitors with an attention that bordered on the indecent. The same chandelier, a monstrosity of Bohemian crystal, unlit and furred with dust.

But the mirrors were new.

They lined the walls of the corridor leading to the conservatory: a dozen oval mirrors in tarnished silver frames, hung at irregular heights. Elara stopped before the first one. Her reflection stared back, rain-streaked and hollow-eyed, but there was something wrong with the glass. A faint warping, as though the surface had been heated and allowed to cool imperfectly. Her face seemed to shift when she turned her head, lagging by the smallest fraction of a second.

"Aldous," she said. "When did these go up?"

"Father's project." He was already walking ahead. "He became obsessed, in his final years. Mirrors everywhere. He said he was 'correcting the ledger.' Do you know what that means?"

The phrase struck her like a stone dropped into still water. Correcting the ledger. She had heard it before, in this house, in her childhood. Her mother had whispered it during one of her episodes, rocking in a chair that faced an empty wall. We must correct the ledger, Elara. The accounts are out of balance.

She did not answer her uncle. Instead, she followed him through the corridor, past the morning room where Inspector Harland's shadow moved against the frosted glass of the door, past the library with its smell of decaying leather, until they reached the entrance to the conservatory.

Yellow tape had been stretched across the doorway. A constable stood guard, a young man with a face that had not yet decided on its final shape. He nodded at Aldous and stepped aside.

The conservatory was a cathedral of glass and wrought iron, built in the Victorian fashion, meant to house exotic plants imported at obscene expense from colonies that no longer existed. The plants had died long ago. What remained were skeletal ferns, their fronds like desiccated lace, and a single fig tree that had pushed through a shattered pane and now grew half outside, half within.

At the center of the tiled floor, a chalk outline marked where the body had fallen. Beside it, a yellow evidence marker indicated the location of the mirror fragment.

Elara crouched at the edge of the outline. The tiles here were a deep malachite green, polished to a high sheen. A single crack ran through the tile where Silas's head had struck. She touched it. The edges were sharp. New.

"Aldous," she said without looking up. "Was the floor wet?"

"The constable asked the same thing. It was not. The housekeeper had been through at noon."

"Then why the sign?"

She pointed. At the far end of the conservatory, partially obscured by the dead fig tree, stood a bright yellow warning sign. Wet Floor. Its surface was pristine, untouched by dust. It had been placed there recently. Deliberately.

Aldous stared at the sign as though seeing it for the first time. "I do not know."

"Someone does."

She rose and walked to the sign. Beneath it, the tiles were a different shade of green, slightly lighter, as though they had been replaced. She knelt again. The grout was fresh. Less than a week old, she estimated.

"These tiles were replaced recently. Why?"

"Father was always making modifications." Aldous's voice had acquired a defensive edge. "He said the house was 'settling wrong.' He had workmen here constantly."

"And where are these workmen now?"

"Dismissed. The day before he died. All of them."

Elara filed this information away. She stood and surveyed the conservatory one final time. The glass walls reflected the moon in a dozen distorted copies. The wind stirred the dead ferns. And somewhere, very faintly, she heard a sound that should not have been there: the distant chime of a music box, playing a melody she remembered from her childhood.

She had heard it last on the night her mother died.

"We should speak to Inspector Harland," she said.

The morning room had been converted into a temporary station. Inspector Harland was a man of perhaps sixty, with the weathered face of someone who had spent a career looking at things he would rather forget. He sat behind a folding table, a cup of tea growing cold at his elbow, a notepad open before him.

"Miss Blackwood." He rose and offered his hand. "My condolences. Your grandfather was a fixture in this community."

"Thank you." She took the chair opposite him. "I understand you've ruled it an accident."

"Preliminary finding." He tapped his notepad. "The stairs are steep. The light in that conservatory is poor at dusk. The floor, as you saw, is highly polished. A man of his age..."

"A man of his age," Elara said, "did not walk down those stairs after dark. He was terrified of falling. He had a bell installed beside his bed so he could summon help. He would not have entered that room alone at dusk."

Harland studied her for a long moment. Then he pushed his notepad across the table.

"This was found in his pocket."

The note was written on the back of a receipt from Thornwood Mercantile, the family's flagship department store in Glastonmere. The handwriting was Silas's, spidery and precise, the ink blotted in several places as though the pen had been pressed too hard.

Elara, The ledger must be corrected. You are the only one who can see it. The mirrors remember what the family forgets. Do not trust the reflection that smiles. Come home.

"What does it mean?" Harland asked.

"I have no idea."

It was the first lie she had told in years, and it came as naturally as breathing.

After the inspector left, Elara retreated to the room that had been her mother's as a girl. It was in the east wing, where the ivy pressed against the windows like green hands. The furniture had been draped in white sheets. The air smelled of lavender and something older, something like wet stone.

She pulled back the sheet from the vanity. An oval mirror, tarnished at the edges, reflected her face. She stared at her own eyes, dark and heavy-lidded, the inheritance of the Blackwood line. Her mother had had those eyes. Silas had them. Victor, the founding patriarch, stared down from his portrait with those same bottomless pupils.

The difference was what lay behind them. Elara had spent her adult life building walls. In the courtroom, she was known for her composure, her ability to remain unmoved while opposing counsel floundered. But here, in this house, she felt the walls thinning.

She opened her briefcase and withdrew a manila folder. Inside was the complaint for Florio v. Thornwood Mercantile, the civil suit that had been waiting on her desk when the constable's call came through.

The facts were straightforward. On December third, a man named Marcus Florio had entered Thornwood Mercantile to purchase a set of crystal tumblers for his wife's birthday. He had been walking down the main aisle, past the mirrored columns that were a signature of the store's 1920s design, when he slipped on a patch of wet floor. No sign had been posted. His fall resulted in a fractured wrist, two cracked ribs, and, according to his deposition, something far stranger.

She turned to the relevant page.

...the floor became like a mirror, but it was not reflecting the ceiling. It was reflecting a room I have never seen. A nursery, I think. There was a child in a white dress. She was holding out her hand. And then I was falling, and I heard a voice say, 'The ledger requires a correction.'

The deposition continued, but Elara stopped reading. The phrase echoed in her skull like the chime of a bell struck too close.

The ledger requires a correction.

She looked up from the folder. In the vanity mirror, her reflection was watching her read. But the angle was wrong. She was looking down at the page, but her reflection was looking directly at her.

Elara's pulse quickened. She raised her right hand.

The reflection raised its left.

She lowered her hand slowly. The reflection lowered its hand at the same speed, but there was a quality to the movement she could not name, a deliberateness that felt independent of her own volition.

"The mirrors remember," she whispered.

The reflection's lips did not move.

Behind her, in the darkened hallway, the music box began to play again. The same melody, closer now, each note distinct. A lullaby. Her mother's lullaby.

Elara did not turn around. She had learned, in fourteen years of litigation, that some things should not be confronted directly. Some things must be observed from the corner of the eye, allowed to exist in the peripheral, where they could do no harm.

She closed the folder. She covered the vanity mirror with its sheet. And then, very deliberately, she walked to the door and locked it.

Outside, the rain continued to fall on Thornwood. Somewhere in the conservatory, the wet floor sign stood sentinel over a patch of tiles that did not match the others. In the morning room, Inspector Harland's tea grew colder. And in the east wing, Elara Blackwood sat with her back to a covered mirror and listened to a lullaby that had not been played in fourteen years, waiting for the dawn.