DON'T DRINK THAT, MICHAEL!” I SHOUTED, KNOCKING THE CHAMPAGNE GLASS FROM THE MAFIA BOSS'S BROTHER'S HAND

Luca and Michael grabbed the rusted bars, their muscles straining as they hauled the heavy grate aside. A dark, damp tunnel stretched out before us, sloping slightly upward toward the foundation of Harbor House.

We clicked on our flashlights and stepped inside.

The air grew colder and smelled distinctly of gunpowder and old earth. As we walked deeper into the tunnel, the brickwork changed. The old, crumbling mortar was replaced by smooth, modern concrete reinforcements. My father’s handiwork.

"He did a brilliant job," Michael whispered, running his hand along the reinforced beam. "The city inspectors would never have detected a structural anomaly from above."

After ten minutes of walking, the tunnel widened into a massive, cavernous room.

My breath caught in my throat.

It wasn't just a weapons cache. It was a fully operational black-market distribution hub. Wooden crates stamped with foreign military insignias were stacked to the ceiling. Racks of assault rifles, explosives, and untraceable currency lined the walls.

"Millions of dollars in illegal inventory," Luca said, his voice echoing in the vast space. He pulled out his phone, quickly snapping photographs of the crates, the serial numbers, and the Bellini shipping manifests pinned to a corkboard. "This is it. We have him."

But as I swept my flashlight across the room, the beam caught on something reflecting light in the corner.

It was a small, locked metal lockbox sitting on a wooden desk.

I walked over to it. The lock was old and rusted. Without thinking, I grabbed a heavy iron wrench off the desk and brought it down hard on the padlock. It shattered.

I opened the lid.

Inside was a collection of personal items Victor had clearly taken from the people he blackmailed. There were wedding rings, passports, and deeds.

And resting right on top was a delicate, silver necklace with a small locket.

I gasped, dropping the flashlight.

"Emily?" Luca was at my side in a second. "What is it?"

I picked up the locket with trembling fingers. I didn't need to open it to know what was inside. I had worn it every day of my childhood until my mother told me she had to sell it to pay for groceries.

"It's my mother's," I whispered, tears finally spilling over my eyelashes.

I pressed the tiny clasp. The locket popped open.

Inside wasn't a picture. It was a tiny, perfectly folded piece of microfilm.

Luca took it carefully, holding it up to the light of his phone. His eyes widened.

"It's a ledger," Luca breathed. "Your father didn't just build the tunnel, Emily. He kept a record of every single transaction Victor made. He hid it in your mother's necklace, and Victor took it as collateral so your father could never use it against him."

We had the ultimate proof.

Suddenly, a loud, metallic slam echoed through the cavern.

We all spun around.

The heavy iron door leading to the Harbor House basement had just been thrown open.

And standing in the doorway, silhouetted by the harsh light of the basement, was Vanessa Bellini.