The church bells had faded, the reception glowed with golden light, and laughter filled the lawn.

My sister, Sophia, had just married the love of her life, Michael. Everything felt perfect—champagne glasses clinking, jazz music drifting, Sophia radiant in her ivory dress.

Then my father, Thomas, appeared beside me. His face was pale, lips pressed tight. He gripped my hand and whispered urgently, “Get in the car. Now.”

At first, I thought he was joking. But the fear in his eyes told me otherwise. “Dad, what’s happening?” I stammered as he pulled me away. Relatives called after us, but he ignored them, shoving me into his SUV. My heart pounded.

“Dad, you’re scaring me. Please tell me what’s going on!”

He stayed silent until we reached our driveway. Cutting the engine, he finally said, “There’s something I need to tell you. Something I couldn’t say back there.”

I froze as his words sank in: “Sophia shouldn’t be married to Michael. He’s not who he says he is.”

My voice shook. “What are you talking about?”

Running a hand through his graying hair, Dad explained. Two nights earlier, he’d gone to Michael’s apartment to return some tools.

In the mailbox, he found a letter addressed to Michael, signed by Rebecca Lane—my aunt, his sister, who had vanished twenty-five years ago.

“Rebecca called him her son,” Dad said grimly. “Which makes Michael your cousin. Which means Sophia just married her cousin.”

The world tilted. I tried to argue—maybe it was another Rebecca Lane—but Dad slammed the steering wheel. “No. The letter had details only she would know. It’s her.”

Sickness twisted in my stomach. Sophia, glowing at her wedding, was blissfully unaware of the truth.