Not a Happy Family - Shari Lapena

Every family has its secrets. Fred and Sheila Mercer have worked hard their whole lives. And it's paid off. They have a beautiful house in the dream neighbourhood and their three adult children have always had everything they could have wished for. The family has had it good. But now, after a family dinner, the Mercers are dead. Murdered. Their children are devastated, aren't they? Even as they are set to inherit millions. Surely a stranger is responsible and not one of them... This family's secrets are deadly.