S4·E11 Random Act

While shopping in a convenience store with his girlfriend Kate (guest star Samantha Smith), Agent John Grant intercedes during a robbery, but when Kate is wounded and fights for her life, Rachel and Bailey are concerned that he will mete out his own justice outside the law. Even John's shooting of a suspect comes under review, prompting him to angrily resign and grapple with his overwhelming emotions of guilt for Kate's grave condition