Secrets always have a way of coming out.
Rayne had been lying to Duke since the moment they first met. It was too late to tell the truth now, so she kept up with the lies. That was until the lies forced her to leave town taking Duke's son with her. It was only a matter of time before Duke found them, until then she would wait, guarding her secret.
Duke hated being lied to, especially by the people he loved. He didn't even know what her real name was, or if she even really loved him. Duke was determined to search for the woman who stole his son and his heart.