The Au Pair is her first novel.
At CrimeReads Rous tagged eight novels that fuel our fascination with twins, including:
Beside Myself, Ann MorganRead about another entry on the list.
Ellie and Helen are identical twins who switch places as a game when they’re six years old. Helen is the good girl, the favored daughter—or at least, she always has been, up until the point where Ellie insists on keeping Helen’s identity by refusing to switch back. The repercussions for each girl highlight just how much people’s subconscious expectations affect children’s behavior. Years later, as an adult, Helen receives a phone call that might just lead to the original deception finally being exposed.
--Marshal Zeringue