She stole her sister’s life. Now she’s trapped in it.

Madison Lockwood is a nobody—a bartender from Albany with a checkered past and a mountain of debt. Her identical twin, Amelia, is living the dream as the wife of Vince Warren, a tech visionary with a private estate and a fortune that could buy the world.

When Amelia dies in a tragic accident, Madison is offered the chance of a lifetime: step into her sister’s designer shoes, maintain the illusion of a happy marriage, and claim the luxury she’s always envied.

Vince Warren and his circle of elites are fooled by Madison’s performance, but one person sees the truth: Amelia’s six-year-old son, Jonah. He knows she isn't his mother, and his silent, watchful gaze is a ticking time bomb.

As the walls of the mansion begin to close in, Madison finds herself caught in a high-stakes game of psychological cat-and-mouse. Every look is monitored. Every word is measured. And the more she transforms into Amelia, the more she realizes that her sister’s life wasn't a fairy tale.

It was a cage.