Walking Tall: Lone Justice (2007)

Storyline:
In Dallas, witnesses against a drug-lord are murdered in a safe-house.The testimony of FBI agents becomes the only chance to keep him in prison. They are lodged in another safe-house, but the place is invaded and the agents are executed. However, Kate is only wounded, and her boyfriend Nick believes there is a traitor in the agency and takes her to his ranch to protect her life.