Chapter 16 - The Vault of the Seven Kings
The rain over Boston had transformed into a torrential downpour by the time Vance and I reached the western rim of Boston Common.
The city was asleep, oblivious to the fact that beneath their historic brick sidewalks, their brownstones, and their gilded monuments, the ancient ground was hollowed out like a hornet’s nest primed for destruction.
We stood before the padlocked entrance of the Park Street Pumping Station—a nondescript, Romanesque granite structure built in 1897, half-hidden beneath centuries-old elm trees and heavy iron ivy trellises. The padlock on the wrought-iron door had been cut clean through with an oxyacetylene torch, the molten slag still warm against the wet stone.
"Miller has two squads of naval infantry en route," Vance said, checking the tactical feed on his satellite tablet. "ETA twelve minutes. But if Hayes sees them approaching through the park, he pulls the switch immediately."
"We go in alone," I said, checking the magazine of my suppressed carbine. "We find the primary firing circuit and sever it. Everything else is secondary."
I pushed the iron door open. It swung inward without a sound, revealing a stone stairwell descending into the abyssal belly of the city.
The air here was completely different from the cellar at Mount Vernon Street. It did not smell merely of damp earth; it reeked of industrial chemicals, wet diesel exhaust, and raw explosive nitro-methane. The sound of surging, high-pressure water thundered against the granite bedrock below—the subterranean drainage channels, already beginning to fill with the incoming Atlantic tide.
We descended fifty feet down the spiraling granite steps, emerging onto the catwalk of a colossal underground cistern.
The chamber was breathtaking and terrifying. Built from massive blocks of Quincy granite, it stretched for hundreds of yards in every direction, held up by colossal stone columns that the early municipal engineers had nicknamed *The Seven Kings*.
Below the catwalk, thousands of gallons of black harbor water surged through subterranean spillways.
And there, strapped to the base of every single granite column, were rows of bright yellow plastic barrels packed with commercial mining explosives, wired together with bright orange detonation cord that converged upon a raised metal platform at the center of the reservoir.
On that platform stood three men.
Two were armed with automatic rifles. The third was Marcus Hayes, wrapped in a black cashmere coat, holding a heavy military radio transmitter in his gloved left hand.
Vance and I moved along the shadow of the perimeter catwalk, our boots silent against the grated steel. I brought my rifle up, centering the red dot optic squarely between Marcus Hayes’ shoulder blades.
My finger rested against the trigger.
Suddenly, the radio strapped to Vance’s chest—encrypted, silenced, and operating on an isolated military frequency—screeched with an agonizing burst of high-frequency white noise.
Through the static, a voice came over the speaker.
It was not Commander Miller. It was not Julian Croft.
It was the voice of a six-year-old child, whispering from the supposedly secure military bunker at Pier 4:
*"Mr. Duca... the knocking didn't stop. It’s inside the room with us. It’s behind Mommy’s bed."*
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Before I could breathe, every single industrial work light in the subterranean cavern flickered violently and died, plunging the entire vault into pitch-black darkness.
And then, five feet behind Vance and me on the catwalk, the distinct, metallic click of a shotgun hammer being cocked echoed through the dark.
