Runaway Jury (2003)

After a workplace shooting in New Orleans, a trial against the gun manufacturer pits lawyer Wendell Rohr (Dustin Hoffman) against shady jury consultant Rankin Fitch (Gene Hackman), who uses illegal means to stack the jury with people sympathetic to the defense. But when juror Nicholas Easter (John Cusack) and his girlfriend, Marlee (Rachel Weisz), reveal their ability to sway the jury into delivering any verdict they want, a high-stakes cat-and-mouse game begins.