Mark. Campbell Agency, #4

This is the fourth book in the Campbell Agency series, with over 50, 000 words of romantic suspense. Rachel Mashburn isn't welcomed by her biological family, but she's found a new family on the police force in New Orleans. Over the years, she's occasionally worked with Mark Thompson of Cambell Agency, so when she has an off-the-books mission she needs assistance with, she feels comfortable asking for his help.
Late nights and long conversations, however, lead to more than she could have ever expected and a whole new definition of family. Mark Thompson is determined to track down the man who has for so long been plaguing Campbell Agency, and having a source on the police force is a great asset. He's eager to help Rachel when she asks, but the chemistry between them starts to get distracting. What he could never have predicted is that helping her with her own secret investigation might just crack his own wide open.