In the County of Etmi ruled by a Coalition, a character must undergo a Trial by combat.
He has been framed by A magic item - sword, relic, wondrous item - and if found guilty of Terrorism, his punishment will be Imprisonment spell. According to the spell description, the creature is entombed in a state of suspended animation in a small sphere far beneath the surface of the ground. Cast Freedom to release the prisoner. Imprisonment and Freedom indicate you can reach the prisoner, so presumably you can choose the prisoner’s location. This is a perfect setup for dungeon design - put the prisoner at the heart of it.

County - The land ruled over by a count (or earl, in some areas).
Coalition - A coalition government, in a parliamentary system, is a government composed of a coalition of parties. A coalition of parties is also an electoral fusion. The union of different political parties or groups for a particular purpose, usually for a limited time.
Trial by combat - Fight to the death, winner is innocent