Grey Dawn, Black Walls

"Destroy evidence and you become evidence. That's the part they never think through." — Detective Inspector Sienna Blackwood

The dawn came grey.

Not the clean grey of overcast morning but something thicker — a sky stained with the residue of what had burned through the night, the light filtering through a haze that sat across Berriedale like gauze over a wound. The street smelled of it. The houses across the road smelled of it. The cars parked along the kerb wore a fine layer of ash on their windscreens, deposited by smoke that had drifted and settled while the suburb slept or tried to.

Stout hadn't left. He'd moved his car when the fire crews needed the space, sat in it for an hour when the cold became too much, walked the perimeter when sitting became too much. Sienna had done the same — he'd seen her at intervals through the night, a dark figure at different points along the cordon, never still for long.

By six-thirty the flames were out. What remained was steam — thick columns of it rising from the blackened shell where water met heat that the structure was still releasing. The fire trucks had reduced to one. Gallagher's crew moved through the final stages of suppression, checking hot spots, turning over debris with pike poles, ensuring nothing reignited in the spaces they couldn't see.

The lone camera crew from the small hours had been joined by a second van as the sky lightened — the ABC arriving to take over from whichever commercial stringer had drawn the overnight shift. A photographer from the Observer stood at the cordon with a long lens, shooting the ruins in the early light. Sienna had spoken to them twice more during the night. Each time the result was the same — cameras behind the tape, no comment, the footage limited to what the lenses could reach from the road.

Gallagher found them at seven-fifteen. He'd changed his breathing apparatus for a hard hat and his face had been wiped but not washed — clean lines where the mask had sat, soot still dark in the creases around his eyes. He carried three hard hats under one arm and held out two.

"The upper level is partially accessible. The western side — hallway, bedrooms, bathroom — is structurally sound and the floor is holding. But the living area at the front of the house is compromised. A section of the floor has collapsed through to the lower level — came down around four this morning. I won't clear anyone for that space, upper or lower, until engineers have assessed the remaining structure."

Sienna took her hard hat. Her hand closed around the brim and whitened at the knuckles. The lower level — the space beneath the living room where the unidentified body had been found, where her team had spent two days processing evidence they hadn't finished collecting.

"We'll work with what we can access," she said.

"You'll work with what I tell you is safe," Gallagher corrected. "I go first. You follow where I walk. You touch nothing without gloves. If I say stop, you stop. If I say out, you're out. The floor could give way again without warning and I'm not pulling anyone out of a collapsed floor."

"Understood," Stout said.

Gallagher led them in through what had been the front entrance. The door was gone — forced off its hinges by the fire crews during the night, lying face-down on what remained of the front path. The frame still stood, blackened timber holding the shape of an opening that no longer had anything to open into.

They stepped through into the entryway. Small, enclosed — the kind of transitional space that existed only to separate the outside from the inside. Its walls were blackened but standing. Beyond it, the house opened up.

Or had opened up. The living area ahead of them had been open-plan — a modern, spacious room that combined living space, dining, and kitchen, with an island bench dividing the kitchen from the rest. Stout could see the ghost of that design in the ruins. The island bench was still there — its stone top cracked from the heat, the cabinetry beneath it burned to its frame, but the shape recognisable. To the left, the kitchen — appliances warped and stained, cupboards reduced to their hinges, the window above the sink an empty rectangle of blackened brick. To the right, what had been the living space.

Half of it was gone.

The floor ended in a ragged line roughly halfway through the room. Beyond that line — nothing. Open air above the lower level, the broken ends of joists jutting over the drop like fingers reaching for something that had already fallen. Stout could see down into the space below — rubble, collapsed flooring, the tangled remains of whatever the living room had contained when it fell through. The staircase that had once connected the two levels was visible at the far corner, its upper steps still attached to the surviving floor, its lower half buried in debris.

That was where Kate Gibbons had been shot. Near the top of those stairs. Stout looked at the spot and saw nothing — no marker, no stain, nothing that declared a woman had died there two nights ago. The fire had taken that too.

"Stay on this side," Gallagher said. "Don't approach the edge."

They turned away from the collapse. Past the island bench, between the kitchen and what remained of the living room, a doorway led to the hallway. This was where the house narrowed — a corridor running the width of the building, doors on both sides, the structure tighter and more contained than the open-plan space they'd left behind.

Gallagher swept his torch along the floor. "Here." He crouched, directing the beam along the base of the hallway wall. A distinct discolouration ran along the skirting — darker than the surrounding char, a trail of deeper burning that followed a line too deliberate to be accidental. "Accelerant. Liquid, poured along the base of the wall. This is one of your ignition points."

Sienna photographed it. The camera's shutter sounded sharp and foreign in the dead space.

"How many points so far?" Stout asked.

"My crew flagged three overnight. This makes four. There'll be more — the burn pattern is too uniform across the structure for anything less than five or six separate sources." Gallagher stood. Ash fell from his knees. "They brought enough to guarantee total destruction. They weren't leaving anything to chance."

They moved down the hallway. Bathroom on the left — gutted, the bathtub sitting in the ruins, another pour pattern along the base of the vanity. Toilet room beside it — barely a room, barely anything left to identify it as one.

On the right, the study. Stout paused in the doorway. A desk frame, metal, the timber surface burned away. A bookshelf collapsed forward, its contents — books, folders, whatever had been stored there — reduced to a mound of compressed ash. The window had blown out. Morning air moved through the space.

"This room was almost empty when we were here on the second," Sienna said from behind him. "A chair, some shelving. Most of the contents appeared to have been removed before we arrived. Cleared out."

Stout filed it. A study that had been emptied before the police came. Belongings removed in advance of scrutiny. That was a different kind of concealment than fire — slower, more selective, the actions of someone who'd had time to choose what to take and what to leave.

The master bedroom was at the end of the hallway on the right. The largest room in the house and the one where the fire had done its most thorough work. The ceiling was open to the sky, the roof above it gone entirely. Grey light fell into the space unobstructed, illuminating the destruction in merciless detail.

The bed frame — metal, twisted, the mattress consumed. A bedside table reduced to a single metal drawer runner. Curtains gone, window gone, the brick surround cracked from temperature. And on the left side of the doorway, a walk-in wardrobe. Or what had been one — a recessed space, its walls intact, but everything inside reduced to rubble. A clothes railing had fallen. Shelving had collapsed. Charred debris covered the floor of the recess.

Gallagher tested the floor. Tested the walls. "Stable. But mind the debris — there could be nails, glass, anything underneath."

Sienna entered first. She moved through the space photographing, documenting. Stout followed. The wardrobe floor was covered in the remains of its contents — burned fabric, melted shoe soles, unidentifiable fragments. But beneath the debris, where the carpet had been consumed and the floorboards were exposed, something was wrong with the floor.

"Sienna."

She was already looking. She'd seen it before he'd spoken — her eyes had found it the way experienced eyes found anomalies, drawn to the thing that didn't match, the pattern that broke.

A rectangular cavity in the floorboards. Roughly forty centimetres by thirty. The boards around it had been cut — not recently, the saw marks were old, the edges smoothed. A space designed to hold something. Recessed into the floor, hidden beneath carpet, concealed by a wardrobe built over it. The kind of modification that declared its purpose through its concealment.

The cavity was empty.

Sienna crouched beside it. Photographed it from three angles. Measured its dimensions with a small tape she produced from her coat pocket.

"This wasn't in our initial survey," she said. "We processed the living areas and hallway on the second. The bedrooms were next." She looked at the empty space. "Whatever was here, it's gone."

Stout crouched beside her. The cavity's interior was charred — uniformly blackened, the same depth of burn as the surrounding floorboards. No outline. No shadow where something heavy had shielded the timber beneath it. Whatever had occupied this space had been removed before the fire reached it.

"Could be related to the fire," Stout said. "Could be separate. Could be someone cleared this weeks ago when they emptied the study."

"Could be," Sienna agreed. She didn't commit to any reading and neither did he. The cavity was a fact. Its emptiness was a fact. The connection to the fire was a question, and questions stayed open until evidence closed them.

Gallagher appeared in the doorway. "Time. The structure's been bearing our weight for twenty minutes and I want you out before we push it further."

They walked back through the corridor in single file. Gallagher ahead, then Sienna, then Stout. The house surrendered its last details as they passed — another pour pattern near the bathroom door that Gallagher marked with a flag, a section of wall where the brick had cracked from heat stress, a light fitting that hung from its wiring, frozen mid-swing.

At the front entrance they stepped through the empty doorframe and back into the morning. The air outside hit Stout's lungs like cold water — clean after the chemical thickness inside, sharp after the residual warmth of the ruins. He took a breath and felt it reach the bottom of his chest for the first time in an hour.

The street had woken around the disaster. A council crew managed the road closure. Neighbours stood in driveways with mugs of tea and folded arms, watching the blackened house with the careful attention of people who'd been reminded overnight how close destruction could sit.

Gallagher removed his hard hat. "Preliminary report by fourteen hundred. Ignition points, accelerant identification, burn pattern analysis. The full investigation will take weeks, but the preliminary will give you enough to work with."

"Thank you, Captain," Sienna said.

Gallagher looked back at the house one more time. Then he walked towards his truck.

Stout and Blackwood stood on the footpath. Between them and the ruins lay a front garden trampled to mud by boots and hose runoff.

"The blood evidence," Sienna said. "We collected samples from multiple locations through the house — the living room, the hallway, the lower level. Potentially different sources, different locations. All of it is at the lab waiting for processing." She paused. "I'm going to push for urgent turnaround. Before last night, it was a priority case. Now it's the only physical evidence we have left from inside that house. Whatever those samples tell us — who was in there, how many people, where they were — that's what survived. Everything else is in there."

She looked at the ruins. The steam was thinning now, the structure cooling, the grey morning asserting itself over the last traces of heat.

"I'll set up a coordination briefing," she said. "Monday morning. Your case files and mine on the same table. We map every intersection and we work the overlaps together."

"Agreed."

"And Stout — I'll want everything from your interview with Lahey. The recording, your notes, your post-interview assessment. I need to understand what she gave you and what she held back."

"You'll have it."

Sienna put her notebook in her pocket. Her eyes moved across the ruins one more time — the systematic sweep he'd seen her perform throughout the night, the gaze that catalogued and filed and retained.

"Someone is ahead of us," she said. "They were ahead of us on the second. They were ahead of us last night. And they knew about a concealed cavity that we didn't know existed." Her voice carried no frustration. Just the flat clarity of an assessment made without sentiment. "We need to close that gap before they widen it."

She walked to her car. Stout watched her pull away from the kerb, past the media vans and the council cones and the neighbours who were still standing in their driveways trying to make sense of what had happened to their street.

His phone buzzed in his pocket. He pulled it out. A text from Ellen Lowe — the officer who'd handed him the Jeffries warrant in the briefing room what felt like a week ago and was only yesterday morning.

Heard about Berriedale. Pushed the warrant for Jenkins' residence through tonight. Approved. On your desk.

Stout read the message twice. The ruins steamed behind him. The media filmed from beyond the tape. The suburb was waking into a Saturday morning that smelled of smoke and chemical residue and the particular absence that a burned building left in the air around it.

One door had been destroyed. Another had just opened.

He pocketed the phone, started the engine, and drove.