Sister-in-Law by M. R. Morgan
Suzanne Dahlstrom, sexually abused as a child, matures into a strikingly beautiful young woman, determined to get her own back against men. Ultimately becoming an accomplished call girl, she takes advantage of men’s inherent weakness—their sex drive. When one of her clients, who represents a shadowy group of conspirators determined to undermine the president, offers her a huge sum of money to seduce and marry the president’s younger brother, she accepts. As the president’s sister-in-law, she’ll be in a perfect position to seduce the president himself, and the scandal—an affair with his own brother’s wife—will neutralize him politically. The seemingly bizarre scheme appears to be working…until an unexpected turn of events puts both the plan and Suzanne’s life in jeopardy.