Caitlin Strong is a fifth-generation Texas Ranger, proud to wear the badge of her father and grandfather-until a deadly shoot-out along the Mexican border causes her to question her calling. Five years later, Caitlin is still trying to purge herself of guilt from the day that ended her Ranger career. But a shattering discovery will reopen old wounds, and Caitlin's renewed investigation into the truth behind the bloody desert firefight uncovers a terrifying...