Chapter 7 - Shadows in the Sub-Basement

The stone staircase leading down to the sub-basement felt impossibly steep beneath my sneakers. Each step was carved from dense, dark granite, slick with a fine film of moisture that rose from the damp earth below. I kept my hand pressed against the cold brick wall for balance, my fingers brushing over rough mortar and old, crumbling plaster. The ambient light from the upper levels failed completely about halfway down, leaving only the faint, bluish glow of emergency pathway markers embedded low in the baseboards.
As I drew closer to the lower landing, a faint beam of light cut across the darkness ahead. It was Matteo's flashlight, its bright white glare bouncing off exposed brickwork and tangles of abandoned copper piping. I heard the muffled sound of his boots crunching over debris, followed by a low, frustrated curse that echoed off the vaulted brick ceiling. I stopped in the shadow of a massive stone archway, holding my breath so Lily's soft breathing wouldn't betray my presence.
"Damn it," Matteo muttered, his voice sounding rough and strained in the cavernous space.
I peeked around the damp corner. Matteo stood in a wide, circular chamber that looked like an old cistern or a forgotten coal room from the nineteenth century. In his hand, he held a heavy steel crowbar, its tip wedged deep into a thick slab of concrete that blocked an arched opening in the far wall. The concrete cap was fractured down the center, revealing a dark, yawning void behind it. Fresh mortar and grey dust were scattered across the floor around his leather shoes, proving that the barrier hadn't been solid after all; it had been patched over decades ago with inferior materials that were slowly giving way.
"Matteo?" I whispered, the word slipping out before I could catch it.
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He whipped around instantly, the flashlight beam blinding me with a harsh, glaring white circle. His hand tattoos caught the light as he lowered the beam, his chest heaving under his black shirt. For a second, his expression was fiercely guarded, the hardened mask of an estate owner caught in a vulnerable moment of manual labor. Then, recognition softened his features into sheer exasperation.
"Mia," he breathed, stepping away from the open void. "I told you to stay upstairs. What in God's name are you doing down here?"