She's a Highland lady, sworn to become a nun. He's a police detective thrown back in time. Can a vow of love bring them together across centuries? Scotland, 1310. Abandoned by her betrothed nine years ago, Highlander Catriona Mackenzie vowed to join a nunnery. Her wish is about to be granted. Then Tadhg--the man she once loved-reappears, injured and in need of her healing touch. Scotland, 2021. Oxford police detective James Murray is investigating a disappearance in Eilean Donan Castle. He's sure there's a logical explanation. But when he descends to an underground cavern, a magical rock sends him hurtling back through time to the Middle Ages. Locked in a dark room, James is grateful to be rescued by an angelic blonde. Until she takes him prisoner. But when Catriona's brother is poisoned, James convinces her to let him help. With a killer on the loose, James won't leave his Medieval angel unprotected. He knows she's off-limits-and he'll be leaving soon-but he can't help wanting her. Torn between her confusing feelings for Tadhg, her intense attraction to James, and her sacred commitment to God, Catriona finds her life in upheaval. Giving in to the passion that burns between them would be a sin. But she has the rest of her life to do penance. Highlander's Vow is the sixth book in the captivating Called by a Highlander time-travel romance series. If you like epic historical romances, forbidden love, and suspenseful mysteries, Mariah Stone's opposites-attract romance will capture your heart and tempt you to sin! Read Highlander's Vow and give in to passion today!