Kynes and the others spill out of the failing vault into a narrow service tunnel, crouched low under a rib of stone. The air is hot with ozone and old dust, and the passage slopes upward through rough, choking dark.

Pebbles skitter past their boots as a crack runs through the arch behind them. Violet light from the vault flickers once, then seals under a curtain of falling grit.

Ahead, the tunnel bends toward a faint seam of bluish light, where damp stone breathes cool air into the close heat. The floor tilts badly, but it holds for now.

A deeper groan rolls through the vault behind them, and a spray of grit rains from the roof. The group presses onward into the unknown side passage, leaving the broken chamber behind.

Kynes lets the void rise through his staff and crosses it with flash step. For one thin heartbeat, the tunnel folds under him like a held breath.

He reappears farther up the slant, boots skidding on dust, the air around him snapping cold and clear where the step lands.

The tunnel behind them grinds and sheds more stone, but Kynes has already claimed the next stretch of dark.

Ahead, the bluish seam opens wider into a higher chamber mouth, and the unstable passage yields to his movement.

Kynes seizes Bren at the waist and the tunnel folds again, cold snapping tight around them.

Stone blurs past. Dust peels away behind his shoulders as the pair vanishes from the collapsing stretch.

They reappear higher on the slope, Kynes already upright, Bren pulled in close beside him, both skidding into a wider pocket of dark.

Fresh grit showers from the shattered stone below, but ahead the bluish opening widens into a real exit, tall enough to take them without ducking.

A thin cold shimmer hangs in their wake, then fades as the passage behind them groans shut and the way forward opens at last.

The opening ahead breathes colder air into the tunnel. Kynes cuts his gaze into the dark and asks after Mara.

Walter stops at the edge of the widening exit, head tilted as if listening through stone. The gloom behind them is sealed, but the chamber beyond still hums with distant pressure.

Walter lifts a hand and traces a line in the drifting grit, marking a fork that the darkness had hidden. A thin silver residue clings to the stone, fresh and deliberate.

Bren turns toward Kynes, tense but relieved, while the bluish opening ahead widens into a clean path. The silver trace points downward like a sign only the house would understand.

Kynes closes his fingers around the blood bond and lets the link answer him. The tunnel narrows away, the stone turning into a felt direction, a living pull under his skin.

A faint pulse answers from beneath the floor, sharp and unmistakably Mara. It is not distant. It is under the lower seam, moving through old stone.

Walter’s traced silver residue brightens in Kynes’s sight, then stretches into a clean route below the split. Dust sifts from the cracked threshold as the hidden way accepts the touch of his magic.

The opening ahead remains cold and clear, while the floor seam under Kynes points down like an invitation cut into the house itself. Mara is located, and the lower passage is now certain.

Kynes opens his palm toward the seam and speaks the old shape of a gate. Violet lines thread the air in front of Mara, sketching a thin door where bare stone should be.

The magic catches. The space ahead folds inward with a soft crackle, and a standing aperture tears open in the tunnel, rimmed with cold light and silver dust.

Mara jolts at the opening, then the pull takes her. The gate swallows her silhouette and returns it a breath later at Kynes’s side, shoes scraping grit from the stone.

The silver residue on the wall goes dim as the gate closes behind her. Fresh dust slides from the tunnel mouth ahead, and the blue glow below the floor steadies into a clear path.

Kynes lowers his hand and lets the blue pull take over. The tunnel ahead breathes colder air, and the light below the floor sharpens into a clean line through the stone.

He steps forward, staff angled low, and the hidden path answers beneath his feet. The loose grit stops shifting, as if the passage is making room for him.

Mara moves in behind Kynes, gaze fixed on the blue seam ahead. Bren follows last, shoulders easing only after the floor holds steady.

The residue on the wall thins to a faint silver stain. Ahead, the blue glow widens into the mouth of another passage, quiet and waiting.