When is a jury's desicion not final?

Answer 1

I am going to assume this has to deal with criminal law as it is in the "Crime and Criminal Law", so this information does not apply to civil (Though it is similar).

The good news is that if a jury returns a verdict of not guilty, that is it - the defendant is not guilty on those charges. It can never be overturned (Assuming there is not some type of jury problem and there is a retrial). Basically, an appeals court can never overturn a not guilty verdict when it is returned by a jury. This is based on the doctrine of claim preclusion. If someone could be tried twice on the same charges, this would be a deprivation of the 14th amendment due process right afforded to the defendant by the state.

There are some instances to take note of, however. One being when the jury returns a guilty verdict, and the judge grants a motion notwithstanding the verdict (Essentially overturning the jury's verdict and finding the defendant not guilty). This CAN be appealed and overturned. This is not subject to claim preclusion.

Good luck.