My Highland Laird. Sci - Regency, #5

Bannon Thompson, talented artist and youngest son of the Duke of Eversleigh, is hastily shipped off after his latest indiscretion. After crashing on rural Skye, leaving him and his valet the sole survivors of a diplomatic mission, Bannon must navigate the complexities of a primitive clan society and take up a role he never wanted: helping a sexy Highlander ensure the safety of both their planets. Laird Ciaran MacKay wants nothing more than to keep his clan safe from the off-world intruders who killed his father.
Suspecting complicity among his own people, he has no choice but to trust outsiders from a spaceship crash-and he can't seem to fight his attraction to the stubborn redhead. Drawn to the handsome laird, Bannon risks a bold affair. But there is more at stake than reputations as they find two lost Regelens and uncover the Intergalactic Navy's plot.