This thriller from a New York Times–bestselling author about a woman stalks her child's adoptive family "moves fast and takes no prisoners" (Publishers Weekly).

Kate and Richard Ryan have the perfect marriage—marred only by their inability to have a child. The adoption agency's call fulfills that dream . . . and opens the door to a nightmare. . . .

Julianna Starr has chosen Kate and Richard to be more than the parents of her child. For Richard is the man of her fantasies, the one she's been waiting for. Stalking the couple, Julianna molds herself in Kate's image and insinuates herself into Richard's life, determined to tear their perfect marriage apart.

But for Kate and Richard, the nightmare has only begun. Because Julianna is not alone. From her dark past comes a man of unspeakable evil. . . .

No one is safe—not even the innocent child Kate and Richard call their own.