Uses a typical case history to show procedures, preparedness, and demeanor for police officers in case development and courtroom appearances. Footage of a two police men investigating a crime. Shots of them standing next to a closed door while holding guns, while proceeding to open the door and go inside to investigate. Shot of the police officer on the stand as a witness being questioned by the prosecutor. Shot of blood on the floor. Footage of a man stabbing a woman on a bed, blood everywhere. The person who stabbed the woman dropped the knife and put his hands behind his head.