"I'll have groundsSome group of people want a person to feel remorse for his crime. To do this, they put on some sort of a performance specifically designed to remind him of his crime. This is one of those plots where doing the sensible thing — just reminding the guy — makes for a short, dull story. So we are going to make things elaborate. His reaction to this may vary. Ideally, this will open his eyes to his cruelty and lead to an epiphany. However, it is equally likely that he will see the performance as an action against him and try to get revenge. Or, he may simply remain oblivious to how the show relates to him. See related: Fawlty Towers Plot, A Simple Plan.
More relative than this. The play's the thing
Wherein I'll catch the conscience of the King".