The Captive Heart (Harlequin Historical, No. 512)

Robert McLarn had killed five men for vengeance -- and so was named by the Cherokee "Five Killer," a man doomed to live life armored in grief. All that mattered to him was the safety of his son -- until the day he met Hannah Albrecht, and their destiny was forever sealed...! - Capricious fate had bound Hannah Albrecht to half-breed Robert McLarn, a man who was slave to one people and hero to another. And in his arms, she had opened to love like a flower in the sun, for McLarn had captured her heart....