Principal Skinner's war medals have been stolen he immediately blames Nelson, who has a "Burglar Buddy" master key and lock-pick set on him, and expels him. However Nelson demands his right to a trail. So with the students as the jury and Ms Krabapel as judge a trial is held. The jurors then go to deliberate, with all but Lisa declaring "guilty" with no evidence. After a long deliberation, Lisa reveals that nearly all the students have a lock pick and convinces them that anyone could have done it and the evidence is not sufficient. Nelson gets off the hook, only to reveal to Lisa that he was guilty all along.
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