Denise was convicted of drug possession and appealed to challenge the admission of evidence obtained through an illegal search. On appeal, parties submit briefs to argue the trial court's decision and whether it violated Denise's constitutional rights. If the appellate court finds error, it will reverse the conviction. Its decision can then be appealed to a higher court through a similar process involving briefs and oral arguments to convince the judges that the lower court erred in its application of the law. The highest courts have discretion over which cases they will review.