The vibration was not a sound. It was a sensation born in the bones, rising through the soles of the feet, resonating in the teeth. A deep hum, metallic and organic at once, like the breath of a mountain of iron or the beat of an underground heart too large to be conceived.
Beatrice's song ceased abruptly, cut short.
The darkness before them was no longer passive. It pulsed. Each vibration was accompanied by a flash of bluish, phosphorescent light that for a millisecond illuminated the walls of the tunnel: tufa carved by ancient hands, marks that could be runes or just the scratches of tools.
Valesi staggered, his shoulder hitting the damp wall. "What the fuck..."
Martinez grabbed him by the arm, not to support him, but to anchor herself. Her watch, on her wrist, emitted a mechanical ticking that seemed gone mad, accelerated, competing with the underground beat. Twenty-three hours and thirty-five minutes. Time was passing, but here, in this gut of stone, it also seemed to twist.
"The Gate," whispered Martinez, her voice choked. "Is it... opening?"Or closing," growled Valesi. He turned toward the stone slab that had closed behind them, separating them from Beatrice's room. Nothing. Only solid stone. There was no seam, no handle. They were trapped in a digestive tract of rock, with an artificial earthquake shaking its bowels.
The vibration increased in intensity. A hiss joined the hum, high-pitched, like the whistle of steam in a forced pipe. The air moved, became a freezing current flowing up the tunnel from behind them, pushing them forward. It carried that sweetish smell of rotten flowers, but now intensified, mixed with ozone and something saline, ancient, like the air in a sea cave sealed for centuries.
"We have no choice," said Valesi, his voice a rasp against the growing din.
They began to run, or rather, to move awkwardly bent double, stumbling on the uneven floor. The blue light pulsed more frequently, revealing brief glimpses of the passageway winding, descending, insinuating itself into the city's bowels. They saw bones piled in a niche, not human, their size and shape reminiscent of a goat's. They saw a faded mosaic on the floor, depicting a wolf and two twins, worn away by footsteps.
The tunnel suddenly opened into a larger space. The vibration here was muffled, deadened by walls lined with shelves. Shelves of dark wood, crammed not with books, but with scrolls, oxidized tin boxes, folders tied with string. The air was dusty, quiet, and the smell of old mold momentarily overpowered the sweetish one.
In the center of the room, seated at a long refectory table cluttered with papers, a very thin man in a worn habit looked up. He did not seem surprised. In the flickering light of an oil lamp hanging from the low ceiling, his sunken eyes scrutinized them like rare but expected specimens.
"You are slower than expected," he said. His voice was a hoarse whisper, seemingly worn out by the dust of the documents. "Beatrice gained perhaps three minutes. No more."
Valesi aimed the Beretta, instinct surviving disorientation. "Who are you? Where are we?"
The man, Father Anselmo, ignored the weapon. His long, gnarled fingers brushed the open page of a huge ledger with a cracked leather cover. "We are in the Archives of the Brotherhood of the Savior of the Souls of Purgatory. Founded in 1527, after the Sack. Our task was not to pray for souls, commissario. It was to catalog them. To catalog *that which does not belong*."
Martinez approached the table, her eye caught by the papers. Maps of Roma, some ancient, others more recent. On each one, red, black, blue dots. Names written in a minute and precise handwriting. She recognized "Arturo Silvestri" next to a black dot in Prati. She saw "B. Roselli" – the print seller – next to a blue dot in piazza Navona.
"The removals," she murmured.
"The *cleanings*," corrected Father Anselmo. "Roma is an organism. A healthy organism rejects infections. Sometimes, however, the infection nests too deep. It becomes... symbiotic. Or it camouflages itself." His gaze, sharp and implacable, settled on Valesi. "Like a police commissario whose roots sink into the mud of the Pontine Marshes, and not in the seven hills."
The blow hit home more than any bullet. Valesi paled. "My mother was Roman. Born in Trastevere."
“Maria Valesi, née Calvanese,” recited the old man, with no need to consult any register. “Born in Terracina, April 12, 1943. Registered in Roma on June 3, 1945 with an act of *anagraphic substitution* signed by a compliant official, shortly before he disappeared in a hunting accident. A lie planted like a nail in the heart of the city. A nail that kept you safe, and your father before you.”
Valesi’s world wavered. The memories of childhood, the stories of his Trastevere grandmother, his mother’s accent which he had always mistaken for a neighborhood inflection… everything shattered and reassembled into a monstrous, false shape. He felt a cold void expand in his stomach.
“Why?” was the only word he managed to extract from his throat.
“Because your grandfather, the true Roman, saved a Keeper’s life during the war. A blood debt. The price was to let into the city, and into its protection, a line of foreign blood. A breach in the system.” Father Anselmo sighed, a sound of torn paper. “A breach that now, with the purges underway, risks being discovered. And remedied.”
The vibration resumed, stronger. From the shelf behind the old man, a few scrolls fell to the ground with a muffled thud.
“The Gate,” said Martinez, bringing her mind back to the immediate emergency. “What is it? Where is it?”
“The Gate is not a *where*,” replied the old man. “It is a *when*. A moment of fracture. A passage through which Roma’s breath passes, its immune system. In this cycle, it has opened beneath the Temple of Vesta. In others, it has opened elsewhere. It is expelling the infection. It is calling back to itself everything that is foreign.”
“Calling it *where*?” pressed Martinez, fear tightening her chest.
Father Anselmo finally averted his gaze from Valesi, to rest it on her. And in his eyes, for the first time, Martinez read something that resembled a frightened pity.
“Nowhere. Into *no place*. It is not a deportation, agent. It is an erasure. A restoration of the original state. Like erasing a wrong word from a parchment.” He pointed to her watch. “Your time is not a countdown to a transfer. It is the erosion of your existence. The closer you get to the center, the more the city recognizes you as a foreign body, the more your memory – in the stone, in the air, in history – dissolves. When the timer reaches zero, for Roma, you will never have existed.”
The silence that followed was more deafening than the vibration. Martinez felt her legs give way. She leaned on the table, her fingers sinking into the fragile paper. Not to die. *To disappear*. To be erased from the memory of the stone, from history, from the memories of those who knew her. Not an act of violence, but of denial.
Valesi slowly lowered the gun. His identity, his life, built on a lie that now protected him from a fate worse than death. He looked at Martinez, the determined and stubborn woman who had lost every point of reference, whose very being was being slowly dismantled.
“How do you stop it?” he asked, his voice flat, empty of its usual cynicism.
Father Anselmo slowly closed the register. “You don’t stop it. You can only… divert it. Redirect the purge impulse. But to do that, a sacrifice is needed. A foreign body of such symbolic value that the Gate will be sated, and will close again for another cycle.”
“A sacrifice,” repeated Valesi.
“Mayor Borghese knows. He made a pact. To provide a high-profile scapegoat to save himself and his administration. He, born in Roma for seven generations, is safe. But his power is not.” The old man stood up, his bones creaking. “Tonight, at the Campidoglio, during the crisis meeting with the remnants of the city government, he will deliver the name to the Gate. He will activate a targeted, spectacular removal, which will placate the city’s hunger and guarantee him more years of power.”
“Who?” demanded Martinez, recovering with a surge of desperate anger.
Father Anselmo shook his head. “I don’t know. I only know that you two are now on the list. You have seen too much. Both the Keepers and Borghese want you dead, or better, erased. Beatrice brought you here to give you a choice.”
“What choice?” growled Valesi.
“To stay here, in the archives. To live in the dark, in the dust, forgotten by the world, but existing. Or to go out, and try to stop him.” The old man pointed to a side passage, hidden by a curtain of worn velvet. “Those stairs lead to the catacombs of San Callisto. From there you could resurface. But if you go out, the Gate will sense you. Your time” – he looked at Martinez – “will accelerate. And Borghese and his sentinels will hunt you.”
Outside, in the tunnel from which they had come, a new sound overlapped the vibration. The dry, metallic sound of a hoof striking stone. One. Then two. Then many.
The sentinels. They had found their trail.
Father Anselmo picked up the oil lamp. “Decide. Now.” He headed towards another passage, darker, disappearing among the shelves with his silent step, leaving them alone in the pulsating room, with the beat of the Gate in their bones and the step of their pursuers approaching at their backs.