The highlander
(Book)

Series information from publisher website.

They call him the Demon Highlander. The fearsome Lieutenant Colonel Liam MacKenzie is known for his superhuman strength, towering presence, and fiery passion in the heat of battle. As Laird to the MacKenzie clan, the undefeated Marquess has vanquished his foes with all rage and wrath of his barbaric Highland ancestors. But when an English governess arrives to care for his children, the master of war finds himself up against his greatest opponent in the game of love. Defying all expectations, Miss Philomena is no plain-faced spinster but a ravishing beauty with voluptuous curves and haughty full lips that rattle the Laird to his core. Unintimidated by her master's raw masculinity and savage ways, the headstrong lass manages to tame not only his wild children but the beast in his soul. With each passing day, Liam grows fonder of Miss Mena and more suspicious. What secret is she hiding behind those emerald eyes? What darkness brought her to his keep? And how can he conquer this magnificent woman's heart without surrendering his own?