When her husband vanishes, Rebecca Sloane discovers he left behind two things: a $1.4 million debt to their neighbors, and a second wife.Rebecca has spent her career as a real estate appraiser carefully measuring houses, trusting that numbers never lie. But after her husband, Peter, abandons his car at Newark Airport, the meticulously maintained facade of her suburban life in Hollow Brook shatters. A knock on the door brings Dana, a woman holding a valid marriage certificate and claiming to be Peter's first wife.Forced into a tense, claustrophobic cohabitation, the two women uncover the shocking truth about the man they both married. Peter was running a massive financial fraud, siphoning the life savings of their wealthy neighbors through a phantom LLC. But the missing millions are only the beginning. As the women dig deeper into Peter's hidden life, a terrifying game of cat-and-mouse ensues inside the walls of Rebecca's home.Both wives are hiding devastating secrets about the night Peter disappeared. Both know exactly whose blood stains the bottom of an unfinished swimming pool at the end of the cul-de-sac. And neither can afford to let the truth surface.