After the death of their father, the half sister of a father-to-be moves into her half-brother and his wife's happy home and brings danger as she seeks to claim the full inheritance.

Haley and Nick Downes are a happy, successful young couple expecting with their first baby, but when Nick's father dies unexpectedly, his estranged sister Zara suddenly shows up to town with a diabolical plan to make the baby, and their father's fortune, all her own.—The Ninth House