Rebecca Moore is desperate for a fresh start.
After leaving her painful past behind, she settles into the glossy comfort of Marin County with her fiancé, Michael, hoping that a new name and a picture-perfect routine will finally give her the peace she craves. But the illusion quickly cracks when they're drawn into the orbit of Ethan and Claire, a seemingly perfect couple whose lives, like Rebecca's, are not what they appear.
From the very first dinner, Rebecca is unsettled by Ethan's charm and control, and she can't shake the feeling that there's something sinister beneath the surface, especially given the mysterious disappearance of his first wife. As Rebecca and Claire grow closer, Rebecca becomes determined to protect her new friend, convinced that history could be repeating itself.
Caught between her own haunted instincts and her fiancé Michael's insistence that she's imagining things, Rebecca must decide how far she's willing to go to keep Claire safe, and whether she can truly leave behind the shadows of her past.