Bobbie is in her third year at Stony End station when a violent bank robbery shocks everyone. When Bobbie’s talented, but seemingly troubled brother, Tom, arrives from Scotland Yard, and her boyfriend, Leo Stanhope questions her role in the police, she begins to feel undermined. An incident involving a shotgun shakes her to the core and leaves her wondering who to trust. Can Bobbie find out the truth, resolve things with Leo and stop her brother from ruining his career?