Kate's heart slammed violently against her ribs. Her face didn't flinch—not a single muscle moved. But inside, it felt like the ground had cracked wide open beneath her feet.

"Excuse me?" she said, even though she'd heard her perfectly.

Sienna tilted her head, studying her like she already had every piece of the puzzle laid out.

"You know," she said smoothly, "I looked into your past. And after finding out your father went bankrupt, something else caught my attention. Your sister, Catherine, was supposed to marry Grayson. Funny, isn't it? That both you and Grayson claimed you didn't know each other…"

A knot twisted hard in Kate's stomach, but Sienna didn't stop.

"So I dug deeper. And deeper. And you know how it goes—with enough money, people talk. Your gardener, for instance, was very helpful. Told me you traveled to Scotland seven years ago." Sienna smirked. "Coincidence? The exact age of your son."

Kate swallowed, unable to speak. But Sienna wasn't finished.

"What reall