Amy Whey is proud of her ordinary life and the simple pleasures that come with it, teaching diving lessons, baking cookies for new neighbors, helping her best friend, Charlotte, run their local book club. Her greatest joy is her family: her devoted professor husband, her spirited fifteen-year-old stepdaughter, her adorable infant son. And, of course, the steadfast and supportive Charlotte. But Amy's sweet, uncomplicated life begins to unravel when the mysterious and alluring Angelica Roux arrives on her doorstep one book club night. Sultry and magnetic, Roux beguiles the group with her feral charm. She keeps the wine flowing and lures them into a game of spilling secrets. Everyone thinks it's naughty, harmless fun. Only Amy knows better. Something wicked has come her way, a she-devil in a pricey red sports car who seems to know the terrible truth about who she is and what she once did.