Once Upon a Duke — Sandra Masters

Serena, an artist and widow, has no desire for another husband. When she meets Geoffrey Austen, attraction sizzles to a scorch. Stolen days and nights ignite forbidden passion. Geoffrey asks Serena to be his mistress, but she wants commitment, love, and marriage, not an affair with a notorious rake.
Geoffrey realizes Serena might be the one woman who can care for his tortured soul, and maybe release his demons. The magic they shared is shattered when he learns she has been forced into an engagement with another. He vows to save her even at the cost of his own life.
Will Geoffrey's gallantry prove he truly loves Serena?
If he survives, will Serena surrender all to him?