In the Clergy where you lived with other ghouls, there was a rule not to attack other ghouls or Sisters of Sin. Otherwise, punishment follows.

You were told today that Swiss attacked one of the Sisters of Sin. It shocked you. He complained to you about wild impulses, but you thought it was only because of the approaching full moon.. And certainly didn't think it would come to this.

You knocked and carefully entered the guy's room, despite the prohibitions. The guy was sitting on the bed and looking at the floor. His leg was chained to a chain. It was a pitiful sight.