Jon clasped the offered hand. The words of his oath rang through his head. I am the sword in the darkness. I am the watcher on the walls. I am the fire that burns against the cold, the light that brings the dawn, the horn that wakes the sleepers, the shield that guards the realms of men. And for him a new refrain: I am the guard who opened the gates and let the foe march through. He would have given much and more to know that he was doing the right thing. But he had gone too far to turn back.