Dearest Tycoons: aka My Four Brothers

The Stapleton family lost their daughter and spent three years looking. In that time Elliana married a man who had no idea who she was, and neither did she. He is the kind who plans upward. When the search finally reaches her, he learns there is a fortune attached and moves quickly, bringing his mistress into the house and passing her off as the found Stapleton heiress. The two of them then demand a divorce from Elliana so the mistress can take the name and the inheritance with it, sparrow into phoenix, as they see it. What they have not accounted for is that Elliana has four older brothers who have been searching for her the whole time and who will do anything she asks. She does not need them for most of it. She lets her husband commit himself publicly to the story about the mistress being the heiress and lets the money he has borrowed against that story come due, and by the time the Stapletons acknowledge her in front of everyone, his creditors are already at the door.