My grandfather has an old clock. It stands in the hall, near the door. The clock is one hundred years old. His father buys it in a small shop. Every hour, the clock makes a soft sound. Ding. Ding. "This clock knows my family," my grandfather says. "It sees my father. It sees me. Now it sees you." I put my hand on the dark wood. It feels warm. At night, I am in bed and I hear the clock. Ding. Ding. I close my eyes. The house is quiet and safe.