Books like Her secret, his duty by Carla Cassidy

James Wolfe is the bodyguard for Princess Ava de Veers, and when their one night together turns into an attraction that could jeopardize her safety, he must balance duty and desire in a high‑stakes romance.

Lord Christopher Highclare, bound by a vow to his dying brother, seeks to marry Miss Louisa Cherington, a modest and overlooked young woman, in this Regency romance.

Thorn Drennan, undercover agent, must protect the pregnant Sophia Carranza whose escape from Mexico has drawn deadly enemies.

A reporter turns to a reclusive journalist for protection, forming an unlikely marriage against a backdrop of secret identities and dangerous threats.

When Elizabeth Shelton discovers her boss is murdered, she is stunned to learn she is pregnant by his son. With a killer on the trail, Whit Adair turns from former lover into her protector, risking everything to keep both mother and child safe.

"In the whole state of Montana, there's nowhere to hide. Laurel Hodges has changed her identity twice. She's been on the run for the past four years, trying to outdistance the men who blame her for the death of one of their own. She's finally found the peace and stability she needs, for herself and her two children, in the small town of Pineview, Montana. But just when she thinks they're safe-- the nightmare starts all over again. The Crew, a ruthless prison gang with ties to Laurel's brother, will never forget and they'll never forgive. And now that they've finally found her again, they'll stop at nothing. It could all end in seconds. Only Sheriff Myles King stands between Laurel and the men who want her dead" -- author's web site.

"In the Barrens, a vast wilderness in northern Canada bordering the Arctic Circle, night consumes every hour of the winter. Humans are scarce; ferocious predators roam freely. Locals say spirits do, too. Rookie cop Tana Larsson doesn't mind the dark and quiet. Five months pregnant and hoping to escape the mistakes of her past, she takes a post in Twin Rivers, population 320. Maybe here she can find peace and community for her child. But with her superior out of commission, Tana becomes the sole police officer in 17,500 square miles. One bitter night, she gets a call about the fatal wolf mauling of two students, and the only way to reach the remote scene is to enlist the help of the arrogant, irritatingly handsome Cameron "Crash" O'Halloran, a local bush pilot with a shady reputation for smuggling and a past cloaked in shadow. When the macabre scene they uncover suggests violence much more sinister than animal, Tana must trust Crash if she wants to protect the town--and herself--from the evil that lurks in the frozen dark."--Amazon.com.