After accomplishing the assignment of dismantling a human trafficking organization, the former military and drifter Jack Reacher goes to Washington to invite his liaison Major Susan Turner to have dinner with him. However, he meets her substitute Major Sam Morgan that explains that Major Turner is arrested accused of espionage. Jack seeks out her veteran lawyer Colonel Bob Moorcroftthat explains that Major Turner is the also accused for the murders of two soldiers in Afghanistan. Further, he also tells that Jack is being sued, accused by a woman of being the father of her fifteen year-old daughter Samantha. When Moorcroft is murdered, Jack is accused of being the killer and sent to a prison. He sees that Turner and he have been framed and also that Turner will be killed by two assassins. However he rescues her and they flee; soon they realize that there is a conspiracy involving military people from the army and a contractor that is a powerful arm dealer. Jack also learns that Samantha is in danger and Turner and he rescues her. They decide to protect her since a skilled assassin is hunting them down while they try to find the motive of the conspiracy. Who can be trusted?