Almost a lady Rose trilogy series, book 3.

A pretend marriage throws a female Pinkerton agent off her stride in this historical romance by a USA Today -bestselling author. Pinkerton agent Willow Hastings had always been successful until security chief Brandt Donovan interfered with an arrest, placing her job on the line. Neither of them will admit their attraction to one another, but after they imitate a married couple to capture a killer, they might not be able to keep it a secret. Wi...