The packet did nothing until dawn. On the subway she unwrapped it, thinking of nothing in particular—only the cold and the way her knees remembered other people. Inside was not a pill or a powder but a tiny capsule the color of a schoolyard marble, iridescent as a beetle's back. When she thought of home—home as a dim apartment where the radiator coughed like an old dog—the capsule warmed. When she thought of freedom—the kind that smelled like gasoline and possibility—it thrummed.