<<If you're caught for a crime, for example stealing. Does the warrant ever expire or do you have to be careful in the city from then on until you eventually get caught? If it happened in Shard do I need to avoid all cities in Therengia or just Shard?

Shard isnt in Therengia

They do not expire as far as I know, they are province wide for title reqs but I'm not sure how it works with actual catching, and you can duck into a room with a guard and >surrender <name of guard> In this case warden (?) for a reduced fine/time in stocks/penalty when you plead.