The Sorcerer
This was the only bad thing Graham failed to flee from in time. This conjuror of dark magic was out looking to give someone a bad day, and Graham happened to be nearby at the time. The magician made his mystic signs and shouted his incantations, and Graham couldn't move. He was paralyzed! The sorcerer intended for a hungry beast or worse to come and kill Graham while he couldn't defend himself, but Graham recovered before that could happen.
Rumor had it this was the same evil sorcerer who stole the mirror. But who can say for sure? No one.