In this educational video from the Supreme Court of Ohio, people selected for jury duty are informed about how courts work and the essential role of jurors to the justice system. The video is targeted to people chosen for a grand jury. Unlike trial juries, grand jurors don't determine guilt or innocence. After a prosecutor presents a case alleging that someone committed a crime, the grand jury decides whether there is sufficient evidence to formally charge the person with the crime. The video describes the history of the grand jury process, common legal terms, and the basic responsibilities of grand jurors, including their vow of secrecy.