grar564 said:
I expect the farm owner guy will run into King Canute while visiting his sick brother, get into a conversation with him and somehow mention Thorfinn. Then the king will visit the farm or something.
My guess is that the farm owner dude gets killed on his trip, and thus Thorfinn and his buddy realise they'll never be freed because whoever takes over won't let them, so they have to escape. Or something.