To Win a Wicked Lord by Sofie Darling

Lord Percival Bretagne is used to playing games. He survived being a spy for a decade using his wits alone. But that was just life and death, now he’s playing for the most important prize of all—love.
He’ll Stop at Nothing . . .
Ten years after his family gave him up for dead, British spy Lord Percival Bretagne is back home, but his mission is far from over. Playing the aristocrat in London gambling dens and at country house parties is just a cover for Percy’s real quest. He’s hunting the man who stole everything from him—his family, his marriage, even his identity. And this time nothing, and no one, will stand in his way.
She’ll Risk it All . . .
But one night with Isabel Galante changes everything. She’s willing to gamble a woman’s most intimate prize in order to save her imprisoned father, but she didn’t expect a devilishly handsome opponent with a dangerously attractive wicked streak. Isabel would do anything for her family, including betraying Percy, but she has no idea that she’s stumbled into the middle of a decade-long quest for revenge.
Who Will Win in the Game Called Love?
Percy has been betrayed before, and now the man who destroyed his life is using Isabel to strike again. With the fate of the government and his new life in the balance, he’ll have to keep Isabel seductively, scandalously close. They begin a passionate game of truth and lies, deception and dalliance, uncovering the heart of who they really are and realizing that winning might mean losing what matters the most—each other.