"Ali," Molly said, ten blades glittering, exposed for an instant. She tugged the blanket away from her legs, revealing the inflated cast. "It’s the meperidine. I had Ali make me up a custom batch. Speeded up the reaction times with higher temperatures. N-methyl-4-phenyl-1236," she sang, like a child reciting the steps of a sidewalk game, "tetra-hydropyridene."