For six years, my son and I planted sunflowers for the twin sister he lost when they were six. Last Saturday, we stepped into the garden before sunrise and found every flower cut down except one, with a white box hanging from its stem.

My son Patrick lost his twin sister when they were six years old. Her name was Lily. If Patrick laughed, Lily laughed. If Lily cried, Patrick cried, too. Lily was the bolder one. Patrick was the one who watched for danger.