Oath Day at the Founding Bell

On the anniversary of the city's founding, anyone who rings the old bronze bell must speak an oath the whole square can hear—and the bell makes it binding. This year pranksters ring it at dawn; nobles ring it at noon; someone rings it at midnight with no one present. Trace the phantom ringer, undo false vows, or use the bell to force truth from a liar who has hidden behind diplomacy for decades.