Adaeze Okafor is nobody special. She sells secondhand clothes in a Lagos market, raises her brother, and keeps her head down. Then a mark appears on her wrist overnight, ancient, growing, and glowing in the dark. By nightfall, a mysterious man is standing outside her third-floor window with no ladder and no explanation, warning her that something far worse is already coming. She doesn't want his protection. She doesn't want any of this. But the mark on her wrist once belonged to her mother who disappeared the night it appeared on her skin. Now Adaeze has a choice: run from the shadow, or follow it straight into the truth.