Keeping Her Trust (Serenity Springs #5)
Dawn Sullivan, Dana Leah, Bobby Lynn

Nathan Brentworth is the best undercover agent the FBI has. He lived for the job, and only the job, until he met Harper. When he was with her, he felt things that he’d never felt before. But after he placed the lives of the children she cared for in danger, she kicked him off the ranch, telling him there was no hope for a future between them. Now she needed his help, and he was not going to tell her no.
When Nathan and Harper are drawn into something more deadly than either of them could have imagined, will Nathan be able to ignore his feelings for her, and keep his focus where it needs to be? Will Harper be able to forgive him for his past mistake? Most importantly, will they make it out alive?