My Fiancé Stole Our Wedding Fund for His Mistress

Rain hammered against the windows of Castellane & Co. as I locked my office door, the sound echoing through the empty corridors of Manhattan's most prestigious jewelry firm. My heels clicked against marble floors that had witnessed a century of wealth changing hands, and I should have been halfway to my apartment by now, soaking in a hot bath and finalizing seating charts for the wedding. Instead, I was following Dominic toward the elevator bank, my fiancé's hand warm against the small of my back.

"You're going to love this," he said, his voice carrying that boyish excitement I'd fallen for five years ago. "I've been planning it for weeks."

I touched my engagement ring—a habit when nerves crept in—and smiled. "Dom, you know I hate surprises."

"Trust me." He pressed the button for sub-level three, where the high-security vault lived beneath twenty feet of concrete and steel. As Head of Archives, I'd been down here a thousand times, cataloging pieces worth more than most people earned in a lifetime. But never after hours. Never with the building this quiet.

The elevator descended with a mechanical groan. Through the brushed steel doors, I caught our reflection: Dominic in his tailored suit, me still in my work clothes, dark circles under my eyes from too many late nights planning a future I thought we'd share. He checked his phone. Once. Twice. The screen's glow made his face look strange.

"Everything okay?"

"Perfect." He pocketed the device as the doors opened onto the vault level. Fluorescent lights buzzed overhead, casting everything in harsh white. "After you."

I stepped into the corridor and caught movement at the far end—a shadow pulling back around the corner. Tessa Parker, probably. Our colleague had been working late a lot recently, always hovering at the edges of my vision with her practiced smiles and helpful suggestions that felt like paper cuts.

Dominic guided me to the vault entrance, where he swiped his access card. The biometric scanner read his palm. Heavy locks disengaged with a series of metallic thuds that I felt in my chest. The door—three feet of reinforced steel—swung open on silent hinges, revealing the temperature-controlled chamber beyond.

My breath caught. It always did.

Millions of dollars in jewelry lined the walls in climate-controlled cases. Diamonds caught the light and threw it back in fractured rainbows. Emeralds glowed like captured forest. And there, in the center display, the Burmese ruby collection we'd acquired last month—stones the color of arterial blood, each one worth more than the brownstone Dominic and I had been saving to buy.

"Wait here," he said, pressing a paper cup into my hands. Coffee, still warm. "I forgot the key card for the display case. Be right back."

I took a sip. Bitter, but I was tired enough not to care. The vault door remained open behind me, and I wandered toward the rubies, my reflection ghosting across the bulletproof glass. In three weeks, I'd be Mrs. Dominic Evans. In three weeks, I'd tell him the truth about my family, about the fortune I'd walked away from to build something real, something earned.

The vault door slammed shut.

The sound hit me like a physical blow. I spun, coffee sloshing onto my wrist, and ran to the entrance. Through the small reinforced window, I saw Dominic's hand on the external control panel. The electronic lock engaged with a whir that made my stomach drop.

"Dom?" I pounded on the glass. "Dominic, what are you doing?"

He didn't answer. Didn't even look at me. His fingers moved across the panel with practiced precision, and I heard it—the ventilation system shutting down. That mechanical sigh as fresh air stopped flowing.

My vision blurred at the edges. I blinked hard, but the room tilted. The coffee. Something was wrong with the coffee. I dropped the cup and it rolled across the floor, leaving a dark trail.

"Help," I tried to shout, but my tongue felt thick. I crawled back to the door, my knees hitting marble, and pressed my palms against the glass. "Please."

Then I saw them both.

Dominic and Tessa, standing together on the other side. She was setting up a camera on a tripod, adjusting the angle. He was watching me with an expression I'd never seen before—cold calculation where warmth used to live.

The intercom crackled to life.

"Hey, babe." Dominic's voice filled the vault, distorted by speakers. "Sorry about this. Really. But you were going to find out about the money eventually, and we couldn't have that."

Tessa leaned into the microphone, her smile sharp as broken glass. "We're going live in five minutes. Dark web pays well for this kind of content. Accidental death, tragic suffocation. The firm's insurance will cover everything."

"You should've been smarter," Dominic added. "Trusting me with the joint account? The wedding fund? God, Scarlett. You made this so easy."

I pressed my forehead against the glass, the drugs pulling me down, down, down into darkness. The last thing I saw before my vision tunneled was Tessa's hand on Dominic's shoulder, possessive and triumphant, and the red recording light blinking to life on the camera.