The Tooth Fairy

Some children are quiet in a way that the whole world misses.

Charlotte Hayes is five years old and has never made a friend. She's afraid of the backyard, terrified of the kids on the street, and in three weeks, kindergarten is coming whether she's ready or not. The only one she talks to—really talks to—is Biscuit, her big, golden-eared dog who loves her without a single question.

Then one afternoon, Charlotte loses her first tooth.

Her parents wrap it in a small piece of blue silk and tuck it...