It’s One of Us by J.T. Ellison

Everybody lies. Even the ones you think you know best of all . . .

Olivia Bender designs exquisite home interiors that satisfy the most demanding clients. But her own deepest desire can’t be fulfilled by marble counters or the perfect rug. She desperately wants to be a mother. Fertility treatments and IVF keep failing. And just when she feels she’s at her lowest point, the police deliver shocking news to Olivia and her husband, Park.
DNA results show that the prime suspect in a murder investigation is Park’s son. Olivia is relieved, knowing this is a mistake. Despite their desire, the Benders don’t have any children. Then comes the confession. Many years ago, Park donated sperm to a clinic. He has no idea how many times it was sold—or how many children he has sired.
As the murder investigation goes deeper, more terrible truths come to light. With every revelation, Olivia must face the unthinkable. The man she married has fathered a killer. But can she hold that against him when she keeps such dark secrets of her own?

This twisting, emotionally layered thriller explores the lies we tell to keep a marriage together–or break each other apart . . .