The first thing five-year-old Sophie Mercer told me was that her grandmother had gone on a trip. The second thing she told me was that her mother had made her promise not to talk about the night Grandma fell. Her mother laughed when Sophie said it. She called it a child’s imagination, the kind of nonsense kids invent after overhearing adults. But three hours later, a detective found one small detail in Sophie’s drawing that a five-year-old could not possibly have guessed.
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