In the summer of 1998, a woman named Cora borrowed a small black comb from her grandmother's dressing table. It was just a comb, she thought — tortoiseshell, a few teeth missing, the kind of thing that sits in a drawer for decades. But the comb had belonged to her great-aunt Iris, who drowned in the Ohio River in 1937, and it had not been touched since. Cora used it once, to tame a stray curl in the humidity. That night, she dreamed of wet hair. The next morning, her pillow was damp. Over the next week, the comb began to hum — a low, wet drone, like water moving underground. And every time she touched it, she heard Iris's voice, not in words, but in the shape of a memory: the river, the current, the dark. This is the story of a comb that remembered its owner, and a woman who learned that some things should never be borrowed.