"For fifteen years, Lexi and Jake have played the same six numbers with their friends. Over drinks, dinner parties and summer barbecues, the three couples have discussed the important stuff--kids, marriages, careers--and they've laughed off their disappointment when they failed to win anything. But then the unthinkable happens. There's a rift in the group. Someone is caught in a lie. And soon after, six numbers come up that change everything forever....

How do you find a woman who is missing, murdered, or maybe didn't exist? The case has gripped the nation. DCI Clements knows that the dark side of love means both of the woman's husbands are suspects.

Leigh Fletcher: happily married stepmom to two gorgeous boys goes missing on Monday. Her husband, Mark, says he knows nothing of her whereabouts. She went to work and just never came home. Their family is shattered. Kai Janssen: married to wealthy Dutch businessman Daan and vanishes the same week. Kai left their luxurious penthouse and glamorous world without a backward glance. She seemingly evaporated into thin air. Daan is distraught. Detective...