If her name is in the book, then Mara isn't who she thinks she is. She calls her aunt and asks one question: was she adopted? There's a long silence. "Your father made you safe," her aunt finally says. "Whatever's in that book, burn it. Tonight." Then the line goes dead.
Mara can't burn it. Instead she drives to her aunt's house for answers. The door is unlocked, the lights off. On the kitchen table sits an old photo of Mara as a baby — and a different name written on the back in her father's handwriting. Her aunt is gone. The back door swings open in the wind.
Mara follows the open back door into the yard. Her aunt is there, alive, clutching a shovel beside a freshly dug hole. "Your father buried a box here years ago," she whispers. "The truth about who you really are." Mara takes the shovel and digs until it strikes metal. Inside: her real birth certificate and a letter. Her father hid children from dangerous parents. She was his first.