Killer Wife, Spoiled Life

Claire Barlow marries into the Carter family under an arranged match, taking the place of a half-sister and entering the house as the Barlows' illegitimate daughter. She agreed to the marriage because her adoptive father had been killed and the Carters are where the answers are. She was sold overseas as a child and raised by an organization there, trained in fighting and in the other work the organization did, and she took over running it from her adoptive father before his death. It left her quiet and hard to read. Ethan Carter, the heir, grew up with nothing asked of him and had settled into being a playboy. He did not want the marriage. He falls for her anyway. The Carter family has its own arrangements and its own secrets, and Claire is inside the house now.