An Agent for Arabella (The Pinkerton Matchmaker, #18)

Arabella needs a job to pay for her sister's medical care in Denver. Arabella goes to the Pinkerton Headquarters and is hired easily enough. Then she is paired with Gerard Fletcher. One man she never wanted to see again. Worse, she is expected to marry him to keep the job.  
Gerard Fletcher has debts to pay. Tired of running his own private detective agency, he decides he'd rather have a paycheck and goes to the Pinkerton Headquarters in Denver for a job and is quickly hired. Then he sees Arabella. They are paired and married. Great. She's beautiful even if she does have an attitude. Then he gets the case and his world crumbles. He and Arabella are to find his old partner and catch him in a swindle. Great. Gerard is to catch the very man that he swindled years ago.
Love Never Fails even as Gerard and Arabella do in this sweet romance.