The Spinster Who Saved a Scoundrel by Christi Caldwell

In the next Brethren installment, a clever spinster is matched with a traitor to the Crown.
The death of her father leaves Miss Francesca Cornworthy …. alone, and with one last wish to fulfill—that she marry a safe, respectable gentleman. She sets herself on a course to honor that request. That is until she crosses paths with Mr. Lathan Holman—the very opposite type of gentleman her father wished her to wed.
After one mistake earned him the title of traitor, Lathan Holman has no interest in reentering society. Then he meets a quick-witted, sharp-mouthed spinster. His dark past clouds his present and future. He’d been certain he’d never laugh or smile again…but it isn’t long before, he finds himself doing both with Miss Francesca Cornworthy…and wanting more.