The film is based on the novel "The Perfect Suspect" by Richard, the "King of British thriller novels". Six bullets were fired and five people were killed. The mysterious gunman caused a tragedy in the downtown area and plunged the entire city into panic. All evidence points to former army sniper James Barr (Joseph Scola Joseph Sikora). But he insists on his innocence and demands that his old acquaintance, Jack Richer (Tom Cruise), who served in the military, be brought in. As Jack's investigation deepened, he discovered a bigger mystery. The real murderer of the tragedy seemed to be someone else, and the mastermind behind the scenes with ulterior motives captured Barr, leaving Jack alone to find out the truth. One of the six bullets that leaked was deliberately fired by the killer. In order to understand the sniper's work, Jack went to the sniper's training camp and found a coach named Samuel Cash (Robert Duvall). With the help of Cash and Sister Barr and lawyers, Jack gradually moves into the center of the incident, and a secret about the Soviet reform camp and the Russian gangs is also slow...