At Last by Kathryn Shay

The Sisters of Fire, a hot new firefighter series, follows the path of six women who trained together and remained friends ten years later.

Fire Investigator Lieutenant Tess Di Marco has struggled through prejudice against women, a messy divorce and years of training to get what she wants out of life. One constant through the years has been her mentor and friend, Captain David Ashford, a now-widowed arson investigator. But what happens when sparks of a different kind erupt between them?