In the Barony of Eumnouiet ruled by a Totalitarian, a character must undergo a Trial by combat.
He has been framed by A collusion of guilds - uses resource control for leverage - and if found guilty of Murder, his punishment will be Bestow Curse. The prisoner loses 6 off his ability score. That is devastating, possibly cutting it in half or worse. Forcing them to become an imbecile is a good way to keep the person useful doing menial chores without needing high security. The GM can also craft their own Curse effect, such as 50% chance of lying down every six seconds - it’s hard to escape while taking a siesta.

Barony - The land subject to a baron. Could be scattered across many estates, not necessarily adjacent.
Totalitarian - Totalitarianism (or totalitarian rule) is a concept used to describe political systems where a state regulates nearly every aspect of public and private life. Totalitarian regimes or movements maintain themselves in political power by means of an official all-embracing ideology and propaganda disseminated through the state-controlled mass media, a single party that controls the state, personality cults, central state-controlled economy, regulation and restriction of free discussion and criticism, the use of mass surveillance, and widespread use of terror tactics.
Trial by combat - Fight to the death, winner is innocent