DEA Agent Greg Jennings is dead-and now they're saying he was dirty, on the take. His widow, Sara, hiding out in the Witness Protection program after an attempt on her life, refuses to believe it, though everyone else seems to have accepted it as truth. Everyone, that is, except Drug Enforcement Administration Agent James (Mac) MacIntyre, Greg's best friend. When yet another attempt on Sara's life drives her out of the Wit Sec program and back home to Phoenix, Mac makes it his personal mission to protect Sara and, in the process, to clear her late husband's and his best friend's name. With a ruthless drug cartel hot on their heels and a mole in the agency undermining their every move, Mac and Sara find themselves literally running for their lives-even as romance tugs at their hearts. Will they unearth the truth and outrun the danger in time to carve out a future for themselves?