"What is the first rule, Jacob?" Mark asked his 12-year-old son in the dimly lit basement of their home.

Jacob stood straight as he'd been taught and held his spear in his hand hard against the floor and said confidently, "The dead are our enemy and should not be underestimated. Their power is in their numbers and their singular desire to kill. Use your ears and they will never get the better of you. Keep your distance and do not let them overwhelm you. They must be purified!"

"Very good!" his father said while pacing the room. "What is the second rule?"