It’s the hottest city in the U.S., and it’s not just the weather that’s heating up.Kim Gatlin, ambitious archaeologist and college professor, is taking the spring semester off to do a survey of a remarkable rock art site in Yuma, Arizona. The wild remote desert also holds gun-toting locals and desperate refugees, but the biggest hazard proves to be Bureau of Land Management geologist Claudine “Randi” Randall. Their mutual appreciation of the petroglyphs ought to bring them together, but Kim’s academic goals and Randi’s sense of ownership have them clashing from the word go.Randi, a tough girl whose fears about her past haunt her every move, is reluctant to acknowledge the other type of sparks that fly whenever she and Kim are forced into each other’s company. Professional resentment seems only to fan the heat threatens to burn them both.The beauty and mystery of the Sonoran Desert provide the vibrant backdrop for Robbi McCoy’s (Waltzing at Midnight, Songs Without Words) passionate story of two women forced to question everything they thought they knew about themselves before they can risk their fiery hearts on the biggest gamble of all.