In the intoxicating circle of influence and celebrity surrounding her ultra-rich in-laws, Astrid is an outsider. When she and her husband, Simon, return to the Morning family’s lavish estate for his sister’s wedding, she seizes the opportunity to finally prove she belongs.

As the family members set to work preparing for the ceremony, Astrid’s efforts lead to her uncovering an old radio hidden in the back of a closet. Curious, she turns it on.

Then, the nightmare begins.

Across the static-filled line, a young girl calls for help.

But is the threat real? The Mornings have dealt with cruel pranks before, and they’re certain someone is trying to trick Astrid into revealing the wedding location, or worse.

If she doesn’t heed their warnings, she might just tumble headfirst into a meticulously laid trap. But as the wedding day draws nearer and tensions escalate, she can’t shake the feeling they’re wrong. And when she crosses a line in her search for answers, even Simon can’t hide the doubt lingering in his gaze.

She must make a choice; if the girl is actually in danger, Astrid is running out of time.

In the grand, sun-soaked halls of Morning House, Astrid fears the secrets looming in the shadows. The cracks have begun to show, and in choosing between her own intuition and her new family, the very ground she walks on will crumble.

From the moment she married Simon, all Astrid wanted was the family she’s always dreamed of, but as terrifying truths are unearthed, it becomes undeniable: if she digs too deep into the Mornings’ world, she might find herself buried instead.

Perfect for fans of The Family Secret, Don’t Go Down There, and Bitter House, Modglin returns with a dark, utterly propulsive locked-room thriller, crackling with tension and dripping with wealth, whispers, and unbridled power.