In The Dragon on the Border, Sir James, the Dragon Knight, faces his most terrifying challenge—the Hollow Men, spirits of the dead in empty suits of armor. Their weapons are all too real, and a slain Hollow Man can be resurrected within two days. As long as one of their unholy number endures, no Hollow Man can ever truly die. It's a battle that could test any dragon. Not to mention a knight. Or an American. Or all three in one!