In the Canadian Courts when the mode of trial is trial by jury as elected by the accused, then the jury is the trier of fact. Of the jury has been excused by the Court without any jury verdict, then the trial is concluded; as a mistrial. You cannot reconvene that jury or call them back to the Court.

 In the Canadian Courts when the mode of trial is trial by jury as elected  by the accused, then the jury is the trier of fact. Of the jury has been excused by the Court without  any jury verdict, then the trial is concluded; as a mistrial. You cannot reconvene that jury or call them back to the Court.