The first sign that something was wrong was not the blood.

It was the way Kaylee looked back at the driveway when I asked her to remove her shoes.

She had barely crossed the threshold of our house. Her overnight bag was hugged against her chest, both arms wrapped around it as if someone might try to take it. Dust dulled the toes of her pink sneakers, and the lace on the right shoe had been pulled into a knot so tight I could see the fabric puckering beneath it.