The Missing Heir — Jane Toombs

Raising horses -- not spying on scheming females -- was rugged Russ Simon's passion. Still, for his family's sake, he grudgingly agreed to discover whether poor if pretty rancher Marigold Crowley was a gold-digging impostor...or a truly missing heiress.

Cynical-about-women Russ never expected to fall for his golden-haired quarry. With her unsuspecting smile, her soft lilac scent and her innocent love of horses, orphaned Mari seemed hungry for a family, not a fortune. And Russ ached to make her his. Trouble was, could he trust her? Worse, once Mari uncovered his seductive charade, would she trust him?